1 (Slip Opinion) OCTOBER TERM, 2021

Syllabus

NOTE: Where it is feasible, a syllabus (headnote) will be released, as is being done in connection with this case, at the time the opinion is issued. The syllabus constitutes no part of the opinion of the Court but has been prepared by the Reporter of Decisions for the convenience of the reader. See United States v. Detroit Timber & Lumber Co., 200 U. S. 321, 337. 

## SUPREME COURT OF THE UNITED STATES

Syllabus

SHINN, DIRECTOR, ARIZONA DEPARTMENT OF CORRECTIONS, REHABILITATION AND REENTRY v

. MARTINEZ RAMIREZ

CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT

No. 20–1009. Argued December 8, 2021—Decided May 23, 2022*
Respondents David Martinez Ramirez and Barry Lee Jones were each

convicted of capital crimes in Arizona state court and sentenced to death. The Arizona Supreme Court a ffirmed each case on direct re

view, and each prisoner was denied state postconviction relief. Each also filed for federal habeas relief under 28 U. S. C. §2254, arguing that trial counsel had been ineffect ive for failing to conduct adequate investigations. The Federal District Court held in each case that the prisoner’s ineffective-assistance cl aim was procedurally defaulted be

cause it was not properly presented in state court. To overcome proce

dural default in such cases, a pris oner must demonstrate “cause” to excuse the procedural defect and “actual prejudice.” Coleman v. Thompson, 501 U. S. 722, 750. To de monstrate cause, Ramirez and Jones relied on Martinez v. Ryan, 566 U. S. 1, which held that ineffec

tive assistance of postconviction counsel may be cited as cause for the procedural default of an ineffective- assistance-of-trial-counsel claim. In Ramirez’s case, the District Court permitted him to supplement the record with evidence not presented in state court to support his case to excuse the procedural default. A ssessing the new evidence, the court excused the procedural default but rejected Ramirez’s ineffective-as

sistance claim on the merits. The Ninth Circuit reversed and re

manded for more evidentiary develo pment to litigate the merits of

——————

* Together with Shinn, Director, Arizona Department of Corrections, Rehabilitation and Reentry, et al. v . Jones (see this Court’s Rule 12.4), also on certiorari to the same court.2 SHINN v. MARTINEZ RAMIREZ

Syllabus

Ramirez’s ineffective-assistance-of-trial-counsel claim. In Jones’ case, the District Court held a lengthy evidentiary hearing on “cause” and “prejudice,” forgave his procedural default, and held that his state trial counsel had provided ineffective assi stance. The State of Arizona pe

titioned this Court in both cases, arguing that §2254(e)(2) does not per

mit a federal court to order evidentiary development simply because postconviction counsel is alleged to have negligently failed to develop the state-court record.
Held : Under §2254(e)(2), a federal habeas court may not conduct an evi

dentiary hearing or otherwise consid er evidence beyond the state-court record based on the ineffective assistance of state postconviction coun

sel. Pp. 6–22.

(a) To respect federal-state dual sovereignty, see Printz v. United States, 521 U. S. 898, 918, the availabili ty of federal habeas relief is narrowly circumscribed, see Brown v. Davenport , 596 U. S. ___, ___– ___. For example, only rarely may a federal habeas court hear a claim or consider evidence that a prisoner did not previously present to the state courts in compliance with state procedural rules. Pp. 6–13. (1) Federal habeas review overrides the States’ core power to en

force criminal law—an intrusion that “imposes special costs” on the federal system. Engle v. Isaac, 456 U. S. 107, 128. Two of those costs are particularly relevant here. First, a federal order to retry or release a state prisoner overrides the State’s sovereign power to enforce “soci

etal norms through criminal law.” Calderon v. Thompson, 523 U. S. 538, 556. Second, federal intervention imposes significant costs on state criminal justice systems. See, e.g., Wainwright v. Sykes, 433 U. S. 72, 90. Pp. 6–8. (2) In light of these costs, this Court recognizes that federal ha

beas review is not “a substitute for ordinary error correction through appeal,” but is an “extraordinary remedy” that guards only against “extreme malfunctions in the state criminal justice systems.” Harring

ton v. Richter, 562 U. S. 86, 102–103. To ensure that federal habeas retains its narrow role, both Congress and federal habeas courts have set out strict rules requiring prisoners to raise all of their federal claims in state court before seeking federal relief. The Antiterrorism and Effective Death Penalty Act of 1996 (AEDPA) requires state pris

oners to “exhaus[t] the remedies ava ilable in the courts of the State” before seeking federal habeas relief. §2254(b)(1)(A). And the doctrine of procedural default—“an important ‘corollary’ to the exhaustion re

quirement,” Davila v. Davis , 582 U. S. ___, ___—gen erally prevents federal courts from hearing any federal claim that was not presented to the state courts “consistent with [the State’s] own procedural rules,” Edwards v. Carpenter, 529 U. S. 446, 453. Together, exhaustion and procedural default promote federal- state comity by affording States3 Cite as: 596 U. S. ____ (2022)

Syllabus

“an initial opportunity to pass upon and correct alleged violations of prisoners’ federal rights,” Duckworth v. Serrano, 454 U. S. 1, 3 ( per cu

riam ), and by protecting against “the significant harm to the States that results from the failure of fe deral courts to respect” state proce

dural rules, Coleman , 501 U. S., at 750. Pp. 8–10. (3) Nonetheless, a federal court is not required to automatically deny unexhausted or procedurally defaulted claims. For instance, when a claim is procedurally defaul ted, a federal court can forgive the default and adjudicate the claim if the prisoner provid es an adequate excuse. And if the state-court record for that defaulted claim is unde

veloped, the prisoner must show th at factual development in federal court is appropriate. Pp. 10–13. (i) Federal courts may excuse procedural default only if a pris

oner “can demonstrate cause for the default and actual prejudice as a result of the alleged violation of federal law.” Coleman , 501 U. S., at 750. With respect to cause, “attorney error cannot provide cause to excuse a default” “in proceedings fo r which the Constitution does not guarantee the assistance of counsel at all.” Davila , 582 U. S., at ___. But in Martinez , this Court recognized a “narrow exception” to that rule, holding that ineffective assistan ce of state postconviction counsel may constitute “cause” to forgive procedural default of a trial-ineffec

tive-assistance claim, but only if th e State requires prisoners to raise such claims for the first time during state collateral proceedings. 566 U. S., at 9

. Pp. 10–11. (ii) Excusing a prisoner’s fa ilure to develop the state-court rec

ord faces an even higher bar. Section 2254(e)(2) applies when a pris

oner “has failed to develop the factual basis of a claim,” i.e., is “at fault” for the undeveloped record in state court, Williams v. Taylor, 529 U. S. 420, 432. If a prisoner is “at fault,” a federal court may hold “an evi

dentiary hearing on the claim” in on ly two limited scenarios not rele

vant here. See §§2254(e)(2)(A)(i), ( ii). The prisoner also must show that further factfinding would demonstrate, by clear and convincing evidence, that he is innocent of the crime charged. Pp. 12–13.

(b) Although respondents do not satisfy §2254(e)(2)’s narrow excep

tions, the Court of Appeals forgave respondents’ failures to develop the state-court record because, in its view, they each received ineffective assistance of state postconviction co unsel. The Court of Appeals erred. Pp. 13–22. (1) Respondents primarily argue that a prisoner is not “at fault” for the undeveloped record if state postconviction counsel negligently failed to develop the state record for a claim of ineffective assistance of trial counsel. But under AEDPA an d this Court’s precedents, state postconviction counsel’s ineffective assistance in developing the statecourt record is attributed to the prisoner. Pp. 13–19.4 SHINN v. MARTINEZ RAMIREZ

Syllabus
(i) A prisoner “bears the risk in federal habeas for all attorney errors made in the course of the representation.” Coleman , 501 U. S., at 754. And, because there is no co nstitutional right to counsel in state postconviction proceedings , a prisoner must ordi narily “bea[r] respon

sibility” for all attorney errors during those proceedings, Williams , 529 U. S., at 432, including responsibility for counsel’s negligent failure to develop the state postconviction record. This Court’s prior cases make this point clear. See, e.g., Keeney v. Tamayo-Reyes, 504 U. S. 1; Wil

liams , 529 U. S. 420; Holland v. Jackson, 542 U. S. 649 ( per curiam ). Thus, a prisoner is “at fault” even wh en state postconviction counsel is negligent. Pp. 14–15. (ii) Respondents propose extending Martinez so that ineffective assistance of postconviction counsel can excuse a prisoner’s failure todevelop the state-court record under §2254(e)(2). But unlike judgemade exceptions to procedural default, §2254(e)(2) is a statute, and thus, this Court has no power to re define when a prisoner “has failed to develop the factual basis of a clai m in State court proceedings.” Nor is it plausible, as respondents contend, that Congress might have en

acted §2254(e)(2) with the expectat ion that this Court would one day open the door to allowing the ineffe ctive assistance of state postconvic

tion counsel to be cause to forgive procedural default. Finally, Mar

tinez itself cuts against respondents’ proposed result. Martinez fore

closed any extension of its holding beyond the “narrow exception” to procedural default at issue in that case. See 566 U. S., at 9. That assurance has bite only if the State can rely on the state-court record. The cases here demonstrate the im proper burden imposed on the States when Martinez applies beyond its narrow scope, with the sprawling evidentiary hearing in Jone s’ case being particularly poign

ant. Pp. 15–19. (2) Respondents propose a second reading of §2254(e)(2) that sup

posedly permits consideration of new evidence in their habeas cases. First, they argue that because §2254(e)(2) bars only “an evidentiary hearing on the claim,” a federal cour t may hold an evidentiary hearing to determine whether there is caus e and prejudice. Second, respond

ents contend that the habeas cour t may then consider that new evi

dence to evaluate the merits of th e underlying ineffective-assistance claim. By considering already admitted evidence, respondents reason, the habeas court is not holding a “hearing” prohibited by §2254(e)(2). But, in Holland , this Court explained that §2254(e)(2)’s “restrictions apply a fortiori when a prisoner seeks relief based on new evidence without an evidentiary hearing.” 542 U. S., at 653 (emphasis deleted). Therefore, when a federal habeas co urt convenes an evidentiary hear

ing for any purpose, or otherwise reviews any evidence for any pur

pose, it may not consider that evidence on the merits of a negligent5 Cite as: 596 U. S. ____ (2022)

Syllabus

prisoner’s defaulted claim unless the exceptions in §2254(e)(2) are sat

isfied. Pp. 19–22. 937 F. 3d 1230 and 943 F. 3d 1211, reversed.

T HOMAS , J., delivered the opinion of the Court, in which R OBERTS , C. J., and A LITO , G ORSUCH , K AVANAUGH , and B ARRETT , JJ., joined. S O

TOMAYOR , J., filed a dissenting opinion, in which B REYER and K AGAN , JJ., joined._________________

_________________ 1 Cite as: 596 U. S. ____ (2022)

Opinion of the Court

NOTICE: This opinion is subject to formal revision before publication in the preliminary print of the United States Reports. Readers are requested to notify the Reporter of Decisions, Supreme Court of the United States, Wash

ington, D. C. 20543, of any typographical or other form al errors, in order that corrections may be made before the preliminary print goes to press. 

## SUPREME COURT OF THE UNITED STATES

No. 20–1009

DAVID SHINN, DIRECTOR, ARIZONA DEPARTMENT OF CORRECTIONS, REHABILITATION AND REENTRY, PETITIONER v. DAVID MARTINEZ RAMIREZ
DAVID SHINN, DIRECTOR, ARIZONA DEPARTMENT OF CORRECTIONS, REHABILITATION AND REENTRY, ET AL ., PETITIONERS v. BARRY LEE JONES

ON WRIT OF CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT
[May 23, 2022]

J USTICE T HOMAS delivered the opinion of the Court. A federal habeas court generally may consider a state prisoner’s federal claim only if he has first presented that claim to the state court in accordance with state procedures. When the prisoner has failed to do so, and the state court would dismiss the claim on that basis, the claim is “proce

durally defaulted.” To overcome procedural default, the prisoner must demonstrate “cause” to excuse the proce

dural defect and “actual prejudice” if the federal court were to decline to hear his claim. Coleman v. Thompson , 501 U. S. 722, 750 (1991). In Martinez v. Ryan , 566 U. S. 1 (2012), this Court explained that ineffective assistance of postconviction counsel is “cause” to forgive procedural de

fault of an ineffective-assistance-of-trial-counsel claim, but only if the State required the prisoner to raise that claim2 SHINN v. MARTINEZ RAMIREZ

Opinion of the Court for the first time during state postconviction proceedings. Often, a prisoner with a de faulted claim will ask a federal habeas court not only to consider his claim but also to per

mit him to introduce new eviden ce to support it. Under the Antiterrorism and Effective Death Penalty Act of 1996 (AEDPA), the standard to expand the state-court record is a stringent one. If a prisoner has “failed to develop the fac

tual basis of a claim in State court proceedings,” a federal court “shall not hold an evidentiary hearing on the claim” unless the prisoner satisfies one of two narrow exceptions, see 28 U. S. C. §2254(e)(2)(A), and demonstrates that the new evidence will establish his innocence “by clear and con

vincing evidence,” §2254(e)(2)(B). In all but these extraor

dinary cases, AEDPA “bars evidentiary hearings in federal habeas proceedings initiated by state prisoners.” McQuig

gin v. Perkins , 569 U. S. 383, 395 (2013). The question presented is whether the equitable rule an

nounced in Martinez permits a federal court to dispense with §2254(e)(2)’s narrow limits because a prisoner’s state postconviction counsel neglig ently failed to develop the state-court record. We conclude that it does not.

I In this case, we address two petitions brought by the State of Arizona. See Ramirez v. Ryan , 937 F. 3d 1230 (CA9 2019); Jones v. Shinn , 943 F. 3d 1211 (CA9 2019).

A On May 25, 1989, David Ramirez fatally stabbed his girl

friend, Mary Ann Gortarez, and her 15-year-old daughter, Candie, in their home. 937 F. 3d, at 1234–1235; State v. Ramirez , 178 Ariz. 116, 119, 121, 871 P. 2d 237, 240, 242 (1994). Ramirez stabbed Mary Ann 18 times in the neck with a pair of scissors, and Candie 15 times in the neck with a box cutter. Id ., at 121, 871 P. 2d, at 242

. Police also found physical evidence that Ramirez had raped Candie, and3 Cite as: 596 U. S. ____ (2022)

Opinion of the Court

Ramirez later admitted that he had sex with the child on the night of the murders and four times before. Ibid. A juryconvicted Ramirez of two counts of premeditated firstdegree murder. Ibid. The trial court sentenced Ramirez to death, ibid ., and the Arizona Supreme Court affirmed on direct review, id. , at 132, 871 P. 2d, at 253. Ramirez then filed his first petition for state postconvic

tion relief. That petition raised myriad claims, but it did not raise the one at issue here : that Ramirez’s trial counsel provided ineffective assistance for “failing to conduct a com

plete mitigation investigation” or “obtai[n] and present available mitigation evidence at sentencing.” App. 402. Ramirez did not raise this in effective-assistance claim until he subsequently filed a successive state habeas petition, which the state court summarily denied as untimely under Arizona law. See ibid. Ramirez also petitioned the U. S. District Court for the District of Arizona for a writ of habeas corpus under 28 U. S. C. §2254. As relevant here, the District Court heldthat Ramirez had procedurally defaulted his ineffectiveassistance claim by failing to raise it before the Arizona courts in a timely fashion. See App. 402–403. Ramirez re

sponded that the District Court should forgive the proce

dural default because his state postconviction counsel was himself ineffective for failing to raise the trial-ineffective

assistance claim and develop the facts to support it. The District Court permitted Ramirez to file several dec

larations and other evidence not presented to the state court to support his request to excuse his procedural de

fault. See 937 F. 3d, at 1238. Assessing the new evidence, the District Court excused the procedural default but re

jected Ramirez’s ineffective-assi stance claim on the merits. See id. , at 1240. The Ninth Circuit reversed and remanded. Like the Dis

trict Court, it held that Rami rez’s state postconviction coun

-4 SHINN v. MARTINEZ RAMIREZ

Opinion of the Court

sel’s failure to raise and deve lop the trial-ineffective-assis

tance claim was cause to forgive the procedural default. See id. , at 1247–1248. The Ninth Circuit also held that Ramirez’s underlying trial-ineffective-assistance claim was substantial, and that Ramirez therefore had suffered prej

udice. See id. , at 1243–1247. But, unlike the District Court, the Court of Appeals dec lined to decide the merits of Ramirez’s claim. The court remanded the case for further factfinding because, in its view, Ramirez was “entitled to evidentiary development to litigate the merits of his inef

fective assistance of trial counsel claim.” Id. , at 1248. Arizona petitioned for rehearing en banc, arguing that the Ninth Circuit’s remand for additional evidentiary de

velopment violated 28 U. S. C. §2254(e)(2). The Ninth Cir

cuit denied rehearing over an eight-judge dissent by Judge Collins. See 971 F. 3d 1116 (2020).

B On May 1, 1994, Barry Lee Jones repeatedly beat his girl

friend’s 4-year-old daughter, Rachel Gray. See 943 F. 3d, at 1215–1216; State v. Jones , 188 Ariz. 388, 391, 937 P. 2d 310, 313 (1997). One blow to Rachel’s abdomen ruptured her small intestine. See id. , at 391, 937 P. 2d, at 313. She also sustained several injuries to her vagina and labia con

sistent with sexual assault. Ibid. Early the next morning, Jones drove Rachel to the hospital, where she was pro

nounced dead on arrival. See ibid. Rachel died of peritoni

tis—“an infection of the lining of the abdomen caused by a ruptured intestine.” Ibid. A jury convicted Jones of sexual assault, three counts of child abuse, and felony murder. Ibid. The trial judge sentenced Jones to death, ibid. , and the Arizona Supreme Court affirmed on direct review, see id. , at 401, 937 P. 2d, at 323. Jones then petitioned for stat e postconviction relief. He alleged ineffective assistance by his trial counsel, but not the specific trial-ineffective-assistance claim at issue here:5 Cite as: 596 U. S. ____ (2022)

Opinion of the Court that his counsel “fail[ed] to conduct sufficient trial investi

gation.” 943 F. 3d, at 1218. The Arizona Supreme Court summarily denied relief. See ibid. Jones next filed a habeas petition in the U. S. District Court for the District of Arizo na. The District Court held that Jones’ trial-ineffective-assistance claim was procedur

ally defaulted, so Jones, like Ramirez, invoked his postcon

viction counsel’s ineffective a ssistance as grounds to forgive the default. Ibid. To bolster his case for cause and preju

dice, Jones also moved to supplement the undeveloped state-court record. Ibid. The District Court held a 7-day evidentiary hearing with more than 10 witnesses and ulti

mately decided to forgive Jones’ procedural default. See id.

, at 1219, 1225–1226. The court then relied on the new evi

dence from the cause-and-prejudice hearing to hold, on the merits, that Jones’ trial counsel had provided ineffective as

sistance. See id. , at 1219. Arizona appealed, arguing that §2254(e)(2) did not per

mit the evidentiary hearing. The Ninth Circuit affirmed, holding that §2254(e)(2) did not apply because Jones’ state postconviction counsel was ine ffective for failing to develop the state-court record for Jones’ trial-ineffective-assistance claim. See id. , at 1220–1222. As in Ramirez , Arizona petitioned for rehearing en banc. And, also as in Ramirez , the Ninth Circuit denied Arizona’s petition over the dissent of Judge Collins, joined by seven other judges. Jones v. Shinn , 971 F. 3d 1133 (2020).

C As noted above, Arizona petiti oned for a writ of certiorari in both Ramirezand Jones . The State maintains that 28 U. S. C. §2254(e)(2) does not pe rmit a federal court to order evidentiary development simply because postconviction counsel is alleged to have neg ligently failed to develop the state-court record. Respondents do not dispute, and there

fore concede, that their habeas petitions fail on the state

-6 SHINN v. MARTINEZ RAMIREZ

Opinion of the Court court record alone. We granted certiorari, 593 U. S. ___ (2021).*

II A state prisoner may request that a federal court order his release by petitioning for a writ of habeas corpus. See 28 U. S. C. §2254. The writ may issue “only on the ground that [the prisoner] is in custody in violation of the Consti

tution or laws or treaties of the United States.” §2254(a). To respect our system of dual sovereignty, see Printz v. United States , 521 U. S. 898, 918 (1997), the availability of habeas relief is narrowly circumscribed, see Brown v. Dav

enport , 596 U. S. ___, ___–___ (2022) (slip op., at 11–14). Among other restrictions, only rarely may a federal habeas court hear a claim or consider evidence that a prisoner did not previously present to the state courts in compliance with state procedural rules.

A “From the beginning of our country, criminal law enforce

ment has been primarily a responsibility of the States.” Kansas v. Garcia , 589 U. S. ___, ___ (2020) (slip op., at 19). The power to convict and punish criminals lies at the heart of the States’ “residuary and inviolable sovereignty.” The Federalist No. 39, p. 245 (C. Rossiter ed. 1961) (J. Madison);

——————

*Ramirez alleges that Arizona forfeited any §2254(e)(2) argument in his case because it did not object to some evidentiary development in the District Court or before the Nin th Circuit panel. But Arizona didobject to further factfinding before the Ninth Circuit panel, see Respondents-Appellees’ Answering Brief in Ramirez v. Ryan , No. 10–99023 (CA9), ECF Doc. 37, p. 58, and, in any event, the Nin th Circuit passed upon §2254(e)(2) when it ordered additional factfinding on remand, see United States v. Williams , 504 U. S. 36, 41 (1992). Further, because we have discretion to forgive any forfeiture, and because “our deciding the matter now will reduce the likelihood of further litigation” in a 30-year

old murder case, Polar Tankers

, Inc. v. City of Valdez , 557 U. S. 1, 14 (2009) (plurality opinion), we choose to forgive the State’s forfeiture be

fore the District Court.7 Cite as: 596 U. S. ____ (2022)

Opinion of the Court

see also Gamble v. United States , 587 U. S. ___, ___–___ (2019) (slip op., at 9–10). Thus, “[t]he States possess pri

mary authority for defining and enforcing the criminal law,” Engle v. Isaac , 456 U. S. 107, 128 (1982), and for ad

judicating “constitutional cha llenges to state convictions,” Harrington v. Richter , 562 U. S. 86, 103 (2011). Because federal habeas review overrides the States’ core power to enforce criminal law, it “intrudes on state sover

eignty to a degree matched by few exercises of federal judi

cial authority.” Ibid. (internal quotation marks omitted). That intrusion “imposes special costs on our federal sys

tem.” Engle , 456 U. S., at 128; see also Kuhlmann v. Wil

son , 477 U. S. 436, 453, n. 16 (1986); Davila v. Davis , 582 U. S. ___, ___ (2017) (slip op., at 15). Here, two of those costs are particularly relevant. First, a federal order to retry or release a state prisoner overrides the State’s sovereig n power to enforce “societal norms through criminal law.” Calderon v. Thompson , 523 U. S. 538, 556 (1998) (internal quotation marks omitted). That is so because habeas relief “frequently cost[s] society the right to punish admitted offenders.” Engle , 456 U. S., at 127; see also Edwards v. Vannoy , 593 U. S. ___, ___ (2021) (slip op., at 6) (“When previously convicted perpetra

tors of violent crimes go free merely because the evidence needed to conduct a retrial has become stale or is no longer available, the public suffers, as do the victims”). “Only with real finality can the victims of crime move forward knowing the moral judgment will be carried out.” Calderon , 523 U. S., at 556. “To unsettle these expectations is to inflict a profound injury to the powerful and legitimate interest in punishing the guilty, an interest shared by the State and the victims of crime alike.” Ibid. (internal quotation marks and citation omitted). Second, federal intervention imposes significant costs on state criminal justice systems. It “disturbs the State’s sig

-8 SHINN v. MARTINEZ RAMIREZ

Opinion of the Court nificant interest in repose for concluded litigation,” Har

rington , 562 U. S., at 103 (internal quotation marks omit

ted), and undermines the States’ investment in their crimi

nal trials. If the state trial is merely a “ ‘tryout on the road’ ” to federal habeas relief, that “detract[s] from the perception of the trial of a criminal case in state court as a decisive and portentous event.” Wainwright v. Sykes , 433 U. S. 72, 90 (1977).

B In light of these significant costs, we have recognized that federal habeas review cannot serve as “a substitute for or

dinary error correction through appeal.” Harrington , 562 U. S., at 102–103. The writ of habeas corpus is an “extraor

dinary remedy” that guards only against “extreme malfunc

tions in the state criminal justice systems.” Id. , at 102 (in

ternal quotation marks omitted); see also Brecht v. Abrahamson , 507 U. S. 619, 633–634 (1993). To ensure that federal habeas corpus retains its narrow role, AEDPA imposes several limits on habeas relief, and we have pre

scribed several more. See, e.g. , Brown , 596 U. S., at ___– ___ (slip op., at 11–13). And even if a prisoner overcomes all of these limits, he is never entitled to habeas relief. He must still “persuade a federal habeas court that law and justice require [it].” Id. , at ___ (slip op., at 11) (internal quo

tation marks omitted). As relevant here, both Congress and federal habeas courts have set out strict rules requiring prisoners to raise all of their federal claims in state court before seeking fed

eral relief. First, AEDPA re quires state prisoners to “ex

haus[t] the remedies available in the courts of the State” before seeking federal habeas relief. 28 U. S. C. §2254(b)(1)(A). Ordinarily, a state prisoner satisfies this exhaustion requirement by raising his federal claim before the state courts in accordance with state procedures. See O’Sullivan v. Boerckel , 526 U. S. 838, 848 (1999). If he does9 Cite as: 596 U. S. ____ (2022)

Opinion of the Court so, a federal habeas court may hear his claim, but its review is highly circumscribed. In particular, the federal court may review the claim based solely on the state-court record,

see Cullen v. Pinholster , 563 U. S. 170, 180 (2011), and the prisoner must demonstrate that, under this Court’s prece

dents, no “fairminded juris[t]” could have reached the same judgment as the state court, Harrington , 562 U. S., at 102; see §2254(d). State prisoners, however, often fail to raise their federal claims in compliance with stat e procedures, or even raise those claims in state court at all. If a state court would dis

miss these claims for their procedural failures, such claims are technically exhausted because, in the habeas context, “state-court remedies are . . . ‘exhausted’ when they are no longer available, regardless of the reason for their unavail

ability.” Woodford v. Ngo , 548 U. S. 81, 92–93 (2006). But to allow a state prisoner simp ly to ignore state procedure on the way to federal court woul d defeat the evident goal of the exhaustion rule. See Coleman , 501 U. S., at 732. Thus, federal habeas courts must apply “an important ‘corollary’ to the exhaustion requirement”: the doctrine of procedural default. Davila , 582 U. S., at ___ (slip op., at 4). Under that doctrine, federal courts generally decline to hear any fed

eral claim that was not presented to the state courts “con

sistent with [the State’s] own procedural rules.” Edwards

v. Carpenter , 529 U. S. 446, 453 (2000). Together, exhaustion and procedural default promote federal-state comity. Exhaustion affords States “an initial opportunity to pass upon and correct alleged violations of prisoners’ federal rights,” Duckworth v. Serrano , 454 U. S. 1, 3 (1981) ( per curiam ), and procedural default protects against “the significant harm to the States that results from the failure of federal courts to respect” state procedural rules, Coleman , 501 U. S., at 750. Ultimately, “it would be unseemly in our dual system of government for a federal10 SHINN v. MARTINEZ RAMIREZ

Opinion of the Court
district court to upset a state court conviction without [giv

ing] an opportunity to the state courts to correct a constitu

tional violation,” Darr v. Burford , 339 U. S. 200, 204 (1950), and to do so consistent with their own procedures, see Ed

wards , 529 U. S., at 452–453.

C Despite the many benefits of exhaustion and procedural default, and the substantial costs when those doctrines are not enforced, we have held that a federal court is not re

quired to automatically deny unexhausted or procedurally defaulted claims. When a claim is unexhausted, the pris

oner might have an opportunity to return to state court to adjudicate the claim. See, e.g. , Rose v. Lundy , 455 U. S. 509, 520 (1982). When a claim is procedurally defaulted, a federal court can forgive the default and adjudicate the claim if the prisoner provides an adequate excuse. Like

wise, if the state-court record for that defaulted claim is un

developed, the prisoner must show that factual develop

ment in federal court is appropriate.

1 “Out of respect for finality, comity, and the orderly ad

ministration of justice,” Dretke v. Haley , 541 U. S. 386, 388 (2004), federal courts may excuse procedural default only if a prisoner “can demonstrate cause for the default and ac

tual prejudice as a result of the alleged violation of federal law,” Coleman

, 501 U. S., at 750. To establish cause, the prisoner must “show that some objective factor external to the defense impeded counsel’s efforts to comply with the State’s procedural rule.” Murray v. Carrier , 477 U. S. 478, 488 (1986). Then, to establish prejudice, the prisoner must show not merely a substantial federal claim, such that “ ‘the errors at . . . trial created a possibility of prejudice,” but ra

ther that the constitutional violation “worked to his actual and substantial disadvantage.’ ” Id. , at 494 (quoting United11 Cite as: 596 U. S. ____ (2022)

Opinion of the Court

States v. Frady , 456 U. S. 152, 170 (1982)). With respect to cause, “[a]ttorney ignorance or inadvert

ence” cannot excuse procedural default. Coleman , 501 U. S., at 753. “[T]he attorney is the petitioner’s agent when acting, or failing to act, in furtherance of the litigation, and the petitioner must bear the risk of attorney error.” Ibid

. (internal quotation marks omitted). That said, “if the pro

cedural default is the result of ineffective assistance of counsel, the Sixth Amendment itself requires that respon

sibility for the default be imputed to the State.” Murray

, 477 U. S., at 488. That is not because a constitutional error “is so bad that the lawyer ceases to be an agent” of the pris

oner, but rather because a violation of the right to counsel “must be seen as an external factor” to the prisoner’s de

fense. Coleman , 501 U. S., at 754 (internal quotation marks omitted). “It follows, then, that in proceedings for which the Constitution does not guarantee the assistance of coun

sel at all, attorney error c annot provide cause to excuse a default.” Davila , 582 U. S., at ___ (slip op., at 6). In Martinez , this Court recognized a “narrow exception” to the rule that attorney error cannot establish cause to ex

cuse a procedural default unless it violates the Constitu

tion. 566 U. S., at 9. There, the Court held that ineffective assistance of state postconviction counsel may constitute “cause” to forgive procedural default of a trial-ineffective

assistance claim, but only if the State requires prisoners to raise such claims for the first time during state collateral proceedings. See ibid. One year later, in Trevino v. Thaler

, 569 U. S. 413 (2013), this Court held that this “narrow ex

ception” applies if the State’s judicial system effectively forecloses direct review of trial-ineffective-assistance claims. Id. , at 428. Otherwise, attorney error where there is no right to counsel remains insufficient to show cause. Martinez , 566 U. S., at 16.12 SHINN v. MARTINEZ RAMIREZ

Opinion of the Court

2 There is an even higher bar for excusing a prisoner’s fail

ure to develop the state-cou rt record. Shortly before AEDPA, we held that a prisoner who “negligently failed” to develop the state-court record must satisfy Coleman ’s cause-and-prejudice standard before a federal court can hold an evidentiary hearing. Keeney v. Tamayo-Reyes , 504 U. S. 1, 9 (1992). In Keeney

, we explained that “little [could] be said for holding a habeas petitioner to one standard for failing to bring a claim in state court and excusing the peti

tioner under another, lower st andard for failing to develop the factual basis of that claim in the same forum.” Id. , at 10. And, consistent with Coleman , we held that evidentiary development would be inappropriate “where the cause as

serted is attorney error.” 504 U. S., at 11, n. 5. Four years later, Congress enacted AEDPA and replaced Keeney ’s cause-and-prejudice standard for evidentiary de

velopment with the even “more stringent requirements” now codified at 28 U. S. C. §2254(e)(2). Williams v. Taylor

, 529 U. S. 420, 433 (2000) ( Michael Williams ). Section 2254(e)(2) provides that, if a prisoner “has failed to develop the factual basis of a claim in State court proceedings,” a federal court may hold “an evidentiary hearing on the claim” in only two limited sce narios. Either the claim must rely on (1) a “new” and “previously unavailable” “rule of constitutional law” made retro actively applicable by this Court, or (2) “a factual predicate that could not have been previously discovered throug h the exercise of due dili

gence.” §§2254(e)(2)(A)(i), (ii). If a prisoner can satisfy ei

ther of these exceptions, he also must show that further factfinding would demonstrate, “by clear and convincing ev

idence,” that “no reasonable factfinder” would have con

victed him of the crime charged. §2254(e)(2)(B). Finally, even if all of these requirements are satisfied, a federal ha

beas court still is not required to hold a hearing or take any evidence. Like the decision to grant habeas relief itself, the13 Cite as: 596 U. S. ____ (2022)

Opinion of the Court decision to permit new evidence must be informed by prin

ciples of comity and finality that govern every federal ha

beas case. Cf. Brown , 596 U. S., at ___–___ (slip op., at 13– 14). Even though AEDPA largely displaced Keeney

, §2254(e)(2) retained “one aspect of Keeney ’s holding.” Mi

chael Williams , 529 U. S., at 433. Namely, §2254(e)(2) ap

plies only when a prisoner “has failed to develop the factual basis of a claim.” We interpret “fail,” consistent with Keeney , to mean that the prisoner must be “at fault” for the undeveloped record in state court. 529 U. S., at 432. A pris

oner is “at fault” if he “bears responsibility for the failure” to develop the record. Ibid.

III Respondents concede that they do not satisfy §2254(e)(2)’s narrow exceptions. Nonetheless, the Court ofAppeals forgave respondents’ failures to develop the statecourt record because, in its vi ew, they each received ineffec

tive assistance of state postconv iction counsel. We now hold that, under §2254(e)(2), a federal habeas court may not con

duct an evidentiary hearing or otherwise consider evidence beyond the state-court record based on ineffective assis

tance of state postconviction counsel.

A Respondents’ primary claim is that a prisoner is not “at fault,” Michael Williams , 529 U. S., at 432, and therefore has not “failed to develop the factual basis of a claim in State court proceedings,” §2254(e)(2), if state postconviction counsel negligently failed to de velop the state record for a claim of ineffective assistance of trial counsel. But under AEDPA and our precedents, state postconviction counsel’s ineffective assistance in developi ng the state-court record is attributed to the prisoner.14 SHINN v. MARTINEZ RAMIREZ

Opinion of the Court

1 As stated above, a prisoner “bears the risk in federal ha

beas for all attorney errors made in the course of the repre

sentation,” Coleman , 501 U. S., at 754, unless counsel pro

vides “constitutionally ineffective” assistance, Murray , 477 U. S., at 488. And, because there is no constitutional right to counsel in state postconviction proceedings, see Davila

, 582 U. S., at ___ (slip op., at 6) , a prisoner ordinarily must “bea[r] responsibility” for all attorney errors during those proceedings, Michael Williams , 529 U. S., at 432. Among those errors, a state prisoner is responsible for counsel’s negligent failure to develop th e state postconviction record. Both before and after AEDPA, our prior cases have made this point clear. First, in Keeney , “material facts had not been adequately developed in the state postconviction court, apparently due to the negligence of postconviction counsel.” 504 U. S., at 4 (citation omitted). We required theprisoner to demonstrate cause and prejudice to forgive postconviction counsel’s deficient performance, see id. , at 11, and recognized that counsel’s negligence, on its own, was not a sufficient cause, see id. , at 10, n. 5. Second, in Michael Williams , we confirmed that “the opening clause of §2254(e)(2) codifies Keeney ’s threshold standard of diligence, so that prisoners who would have had to satisfy Keeney ’s [cause-and-prejudice] test . . . are now controlled by §2254(e)(2).” 529 U. S., at 434. In other words, because Keeney held a prisoner responsible for state postconviction counsel’s neg ligent failure to develop the state-court record, the same rule applied under §2254(e)(2). For that reason, “a failure to develop the factual basis of a claim,” as §2254(e)(2) requires, “is not established unless there is lack of diligence, or some greater fault, attributable to the prisoner or the prisoner’s counsel .” 529 U. S., at 432 (emphasis added). We then applied that rule and held that state postconviction counsel’s “failure to investigate . . . in anything but a cursory manner trigger[ed] the opening15 Cite as: 596 U. S. ____ (2022)

Opinion of the Court clause of §2254(e)(2).” Id. , at 439–440. Third, in Holland v. Jackson , 542 U. S. 649 (2004) ( per curiam ), we again held a prisoner responsible for state postconviction counsel’s negligent failure to develop the statecourt record. Seven years afte r the prisoner’s conviction, and after he had already been denied state postconviction relief, the prisoner found a new witness to provide impeach

ment testimony. See id. , at 650–651. The prisoner claimedthat he discovered the witness so late because “state postconviction counsel did not heed his pleas for assistance.” Id. , at 653. Citing Coleman and Michael Williams , we re

jected the prisoner’s claim. “Attorney negligence,” we held, “is chargeable to the client and precludes relief unless the conditions of §2254(e)(2) are satisfied.” 542 U. S., at 653

. In sum, under §2254(e)(2), a prisoner is “at fault” even when state postconviction counsel is negligent. In such a case, a federal court may orde r an evidentiary hearing or otherwise expand the state-court record only if the prisoner can satisfy §2254(e)(2)’s stringent requirements.

2 Respondents dispute none of this. Instead, they rely al

most exclusively on Martinez ’s holding that ineffective as

sistance of postconviction counsel can be “cause” to forgive procedural default of a trial-ineffective-assistance claim if a State forecloses direct review of that claim, as Arizona con

cededly does. See 566 U. S., at 9. Respondents contend that where, per Martinez , a prisoner is not responsible for state postconviction counsel’s failure to raise a claim, it makes little sense to hold the prisoner responsible for the failure to develop that claim. Thus , respondents propose extending Martinez so that ineffective assistance of postconvictioncounsel can excuse a prisoner’s failure to develop the statecourt record under §2254(e)(2). Congress foreclosed respondents’ proposed expansion of Martinez when it passed AEDPA. Martinez decided that,16 SHINN v. MARTINEZ RAMIREZ

Opinion of the Court in the exercise of our “equitable judgment” and “discretion,” it was appropriate to modify “[t]he rules for when a prisoner may establish cause to excuse a procedural default.” Id. , at 13. Such “exceptions” to procedural default “are judgemade rules” that we may modi fy “only when necessary.” Dretke , 541 U. S., at 394. Here, however, §2254(e)(2) is a statute that we have no authority to amend. “Where Con

gress has erected a constitutionally valid barrier to habeas relief, a court cannot decline to give it effect.” McQuiggin

, 569 U. S., at 402 (Scalia, J., dissenting); see also Ex parte Bollman , 4 Cranch 75, 94 (1807) (Marshall, C. J., for the Court). For example, in McQuiggin , we explained that wehave no power to layer a miscarriage-of-justice or actualinnocence exception on top of the narrow limitations al

ready included in §2254(e)(2). See 569 U. S., at 395–396 (majority opinion). The same follows here. We have no power to redefine when a prisoner “has failed to develop the factual basis of a claim in State court proceedings.” §2254(e)(2). Before AEDPA, Keeney held that “attorney error” during state postconviction proceedings was not cause to excuse an un

developed state-court record. 504 U. S., at 11, n. 5. And, in Michael Williams , we acknowledged that §2254(e)(2) “raised the bar Keeney imposed on prisoners who were not diligent in state-court proceedings,” 529 U. S., at 433, while reaffirming that prisoners are responsible for attorney er

ror, see id. , at 432. Yet here, respondents claim that attor

ney error alone permits a fede ral court to expand the fed

eral habeas record. That result makes factfinding more readily available than Keeney envisioned pre-AEDPA and ignores Michael Williams ’ admonition that “[c]ounsel’s fail

ure” to perform as a “diligent attorney” “triggers the open

ing clause of §2254(e)(2).” 529 U. S., at 439–440. We simply cannot square respondents’ prop osed result with AEDPA or our precedents. Respondents propose that Congress may have actually17 Cite as: 596 U. S. ____ (2022)

Opinion of the Court
invited their judicial update. According to respondents, Martinez explained that Coleman left open whether ineffec

tive assistance of state postconviction counsel might one day be cause to forgive procedural default, at least in an “initial-review collateral proceeding,” Martinez , 566 U. S., at 5, “where state collateral review is the first place a pris

oner can present a challenge to his conviction,” Coleman

, 501 U. S., at 755. Respondents contend that Congress might have enacted §2254(e)(2) with the expectation that this Court one day would open that door. We do not agree. First, “[ g]iven our frequent recognition that AEDPA limited rather t han expanded the availability of habeas relief . . . it is implausible that, without saying so,” Fry v. Pliler , 551 U. S. 112, 119 (2007), Congress in

tended this Court to liberalize the availability of habeas re

lief generally, or access to federal factfinding specifically. Second, in Coleman , we “reiterate[d] that counsel’s ineffec

tiveness will constitute cause only if it is an independent constitutional violation,” and surmised that a hypothetical constitutional right to initial- review postconviction counsel could give rise to a corresponding claim for cause. 501 U. S., at 755; see also Martinez , 566 U. S., at 8–9. Since then, however, we have repeatedly reaffirmed that there is no constitutional right to counsel in state postconviction pro

ceedings. See, e.g. , Davila , 582 U. S., at ___ (slip op., at 6). We also reject respondents’ equitable rewrite of §2254(e)(2) because it lacks any principled limit. This Court’s holding in Martinez addressed only one kind of claim: ineffective assistance of trial counsel. See 566 U. S., at 9. We limited our holding in that way to reflect our “eq

uitable judgment” that trial-ineffective-assistance claims are uniquely important. Id. , at 12–13. Respondents pro

pose that we similarly should permit factual development under §2254(e)(2) only for trial-ineffective-assistance claims. But §2254(e)(2) applies whenever any state pris

oner “failed to develop the factual basis of a claim ,”18 SHINN v. MARTINEZ RAMIREZ

Opinion of the Court §2254(e)(2) (emphasis added), without limitation to any specific claim. There would be no reason to limit respond

ents’ reconstruction of §2254(e)(2) as they propose. Unlike for procedural default, we lack equitable authority to amend a statute to address only a subset of claims. Thus, if a prisoner were not “at fault” under §2254(e)(2) simply because postconviction counsel provided ineffective assis

tance, Michael Williams , 529 U. S., at 432, the prisoner’s blamelessness necessarily would extend to any claim that postconviction counsel negligen tly failed to develop. Not

even Martinez sweeps that broadly. Finally, setting aside that we lack authority to amend §2254(e)(2)’s clear text, Martinez itself cuts against re

spondents’ proposed result. Martinez was “unusually ex

plicit about the narrowness of our decision.” Trevino , 569 U. S., at 431 (R OBERTS , C. J., dissenting). The Court left no doubt that “[t]he rule of Coleman governs in all but the lim

ited circumstances recognized here.” Martinez , 566 U. S., at 16 (emphasis added). “This aggressively limiting lan

guage was not simply a customary nod to the truism that we decide only the case before us.” Trevino , 569 U. S., at 432 (R OBERTS , C. J., dissenting) (internal quotation marks omitted). “It was instead an important part” of the Court’s holding. Ibid. In short, Martinez foreclosed any extension of its holding beyond the “narrow exception” to procedural default at issue in that case. 566 U. S., at 9. To be sure, Martinez recognized that state prisoners often need “evidence outside the trial record” to support their trial-ineffective-assistance claims. Id. , at 13. But Martinez did not prescribe largely unbound ed access to new evidence whenever postconviction counsel is ineffective, as respond

ents propose. Rather, Martinez recognized our overarching responsibility “to ensure that state-court judgments are ac

corded the finality and respect necessary to preserve the in

tegrity of legal proceedings within our system of federal

ism.” Id. , at 9

. In particular, the Court explained that its19 Cite as: 596 U. S. ____ (2022)

Opinion of the Court “holding . . . ought not to put a significant strain on state resources,” because a State “faced with the question whether there is cause for an apparent default . . . may an

swer” that the defaulted claim “is wholly without factual support.” Id. , at 15–16. That assurance has bite only if the State can rely on the state-court record. Otherwise, “federal habeas courts would routinely be required to hold eviden

tiary hearings to determine” whether state postconviction counsel’s factfinding fell short. Murray , 477 U. S., at 487. The cases under review demonstrate the improper bur

den imposed on the States when Martinez applies beyond its narrow scope. The sprawling evidentiary hearing in Jones is particularly poignant. Ostensibly to assess cause and prejudice under Martinez , the District Court ordered a 7-day hearing that included testimony from no fewer than10 witnesses, including defense trial counsel, defense postconviction counsel, the lead investigating detective, three forensic pathologists, an emergency medicine and trauma specialist, a biomechanics and functional human anatomy expert, and a crime scene and bloodstain pattern analyst. See 943 F. 3d, at 1219, 1225–1226. Of these witnesses, only one of the forensic pathologists and the lead detective testi

fied at the original trial. See id. , at 1223–1225. The re

mainder testified on virtually every disputed issue in the case, including the timing of Rachel Gray’s injuries and her cause of death. See id. , at 1226–1228. This wholesale relitigation of Jones’ guilt is plainly not what Martinez envi

sioned.

B
Martinez aside, respondents propose a second reading of §2254(e)(2) that supposedly permits consideration of new evidence in their habeas cases. Their interpretation pro

ceeds in two steps. First, respondents argue that because §2254(e)(2) bars only “an evidentiary hearing on the claim,”20 SHINN v. MARTINEZ RAMIREZ

Opinion of the Court a federal court may hold an evidentiary hearing to deter

mine whether there is cause and prejudice. In respondents’ view, a so-called “ Martinez hearing” is not a “hearing on the claim .” §2254(e)(2) (emphasis added). Second, with that evidence admitted for cause and prejudice, respondents contend that the habeas court may then consider the new evidence to evaluate the merits of the underlying ineffectiveassistance claim. By considering already admitted evi

dence, respondents reason, the habeas court is not holding a “hearing” that §2254(e)(2) otherwise would prohibit. Ibid. There are good reasons to doubt respondents’ first point, but we need not address it because our precedent squarely forecloses the second. In Holland , we explained that §2254(e)(2)’s “restrictions apply a fortiori when a prisoner seeks relief based on new evidence without an evidentiary hearing.” 542 U. S., at 653 (emphasis deleted). The basis for our decision was obvious: A contrary reading would have countenanced an end-run around the statute. Federal ha

beas courts could have accepted any new evidence so long as they avoided labeling their intake of the evidence as a “hearing.” Therefore, when a federal habeas court convenes an evidentiary hearing for any purpose, or otherwise ad

mits or reviews new evidence for any purpose, it may not consider that evidence on the merits of a negligent pris

oner’s defaulted claim unless the exceptions in §2254(e)(2) are satisfied. Respondents all but concede that their argument amounts to the same kind of evasion of §2254(e)(2) that we rejected in Holland

. They nonetheless object that Holland renders many Martinez hearings a nullity, because there is no point in developing a record for cause and prejudice if a federal court cannot later consider that evidence on the merits. While we agree that any such Martinez hearing would serve no purpose, that is a reason to dispense with Martinez hearings altogether, not to set §2254(e)(2) aside.21 Cite as: 596 U. S. ____ (2022)

Opinion of the Court Thus, if that provision applie s and the prisoner cannot sat

isfy its “stringent requirements,” Michael Williams , 529 U. S., at 433, a federal court may not hold an evidentiary hearing—or otherwise consider new evidence—to assess cause and prejudice under Martinez

. This follows from our decision in Schriro v. Landrigan

, 550 U. S. 465 (2007). There, we held that a federal court, “[i]n deciding whether to grant an evidentiary hearing, . . . must consider whether such a hearing could enable an ap

plicant to prove . . . factual allegations [that] would entitle [him] to federal habeas relief.” Id. , at 474. “This approach makes eminent sense,” for if “district courts held eviden

tiary hearings without first asking whether the evidence the petitioner seeks to present would satisfy AEDPA’s de

manding standards, they woul d needlessly prolong federal habeas proceedings.” Cullen , 563 U. S., at 208–209 (S OTOMAYOR , J., dissenting). Here, holding a Martinez hearing when the prisoner cannot “satisfy AEDPA’s de

manding standards” in §2254(e)(2) would “prolong federal habeas proceedings” with no purpose. 563 U. S., at 209 (S OTOMAYOR , J., dissenting)

. And because a federal habeas court may never “needlessly prolong” a habeas case, ibid.

, particularly given the “essential” need to promote the final

ity of state convictions, Calderon , 523 U. S., at 555, a Mar

tinez hearing is improper if the newly developed evidence never would “entitle [the pris oner] to federal habeas relief,” Schriro , 550 U. S., at 474.

C Ultimately, respondents’ proposed expansion of factfind

ing in federal court, whether by Martinez or other means, conflicts with any appropriat ely limited federal habeas re

view. In our dual-sovereign system, federal courts must af

ford unwavering respect to the centrality “of the trial of a criminal case in state court.” Wainwright , 433 U. S., at 90. That is the moment at which “[s]ociety’s resources have22 SHINN v. MARTINEZ RAMIREZ

Opinion of the Court
been concentrated . . . in order to decide, within the limits of human fallibility, the question of guilt or innocence of one of its citizens.” Ibid. ; see also Herrera v. Collins , 506 U. S. 390, 416 (1993); Davila , 582 U. S., at ___ (slip op., at 8). Such intervention is also an a ffront to the State and its cit

izens who returned a verdict of guilt after considering the evidence before them. Federal courts, years later, lack the competence and authority to relitigate a State’s criminal

case. The dissent contends that we “overstat[e] the harm to States that would result from allowing” prisoners to develop evidence outside §2254(e)(2)’s narrow exceptions. Post, at 17. Not so. Serial relitigation of final convictions under

mines the finality that “is essential to both the retributive and deterrent functions of criminal law.” Calderon , 523 U. S., at 555; see also Engle , 456 U. S., at 126–127, and

n. 32. Further, broadly available habeas relief encourages prisoners to “ ‘sandba[g]’ ” state courts by “select[ing] a few promising claims for airing” on state postconviction review, “while reserving others for federal habeas review” should state proceedings come up short. Murray , 477 U. S., at 492; see also Wainwright , 433 U. S., at 89. State prisoners al

ready have a strong incentive to save claims for federal ha

beas proceedings in order to avoid the highly deferential standard of review that applies to claims properly raised in state court. See §2254(d); Harrington , 562 U. S., at 105. Permitting federal factfindin g would encourage yet more federal litigation of defaulted claims.

* * * Because we have no warrant to impose any factfinding beyond §2254(e)(2)’s narrow ex ceptions to AEDPA’s “gen

era[l] ba[r on] evidentiary hearings,” McQuiggin , 569 U. S., at 395, we reverse the judgments of the Court of Appeals.

It is so ordered._________________

_________________ 1 Cite as: 596 U. S. ____ (2022)

S OTOMAYOR , J., dissenting 

## SUPREME COURT OF THE UNITED STATES

No. 20–1009

DAVID SHINN, DIRECTOR, ARIZONA DEPARTMENT OF CORRECTIONS, REHABILITATION AND REENTRY, PETITIONER v. DAVID MARTINEZ RAMIREZ
DAVID SHINN, DIRECTOR, ARIZONA DEPARTMENT OF CORRECTIONS, REHABILITATION AND REENTRY, ET AL ., PETITIONERS v. BARRY LEE JONES

ON WRIT OF CERTIORARI TO THE UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT
[May 23, 2022]

J USTICE S OTOMAYOR , with whom J USTICE B REYER and J USTICE K AGAN join, dissenting. The Sixth Amendment guarantees criminal defendants the right to the effective assist ance of counsel at trial. This Court has recognized that righ t as “a bedrock principle” that constitutes the very “foundation for our adversary sys

tem” of criminal justice. Martinez v. Ryan , 566 U. S. 1, 12 (2012). Today, however, the Court hamstrings the federal courts’ authority to safeguard t hat right. The Court’s deci

sion will leave many people who were convicted in violation of the Sixth Amendment to face incarceration or even exe

cution without any meaningful chance to vindicate their right to counsel. In reaching its decision, the Court all but overrules two recent precedents that recognized a critical exception to the general rule that federal courts may not consider claims on habeas review that were not raised in state court. Just 10 years ago, the Court held that a federal court may consider2 SHINN v. MARTINEZ RAMIREZ

S OTOMAYOR , J., dissenting a habeas petitioner’s substantial claim of ineffective assis

tance of trial counsel (a “trial -ineffectiveness” claim), even if not presented in state court, if the State barred the peti

tioner from asserting that cl aim until state postconviction proceedings, and the petitioner’s counsel in those proceed

ings was also ineffective. See id.

, at 17; see also Trevino v. Thaler

, 569 U. S. 413, 429 (2013). Martinez and Trevino establish that such a petitioner is not at fault for any failure to bring a trial-ineffectiveness claim in state court. Despite these precedents, the Court today holds that such a peti

tioner is nonetheless at fault for the ineffective assistance of postconviction counsel in developing the evidence of trial ineffectiveness in state court. The Court instead holds that a petitioner in these circumstances, having received ineffec

tive assistance of trial and postconviction counsel, is barred from developing such evidence in federal court. This decision is perverse. It is illogical: It makes no sense to excuse a habeas petitioner’s counsel’s failure to raise aclaim altogether because of ineffective assistance in postconviction proceedings, as Martinez and Trevino did, but to fault the same petitioner for that postconviction counsel’s failure to develop evidence in support of the trial-ineffec

tiveness claim. In so doing, the Court guts Martinez ’s and Trevino ’s core reasoning. The Court also arrogates power from Congress: The Court’s anal ysis improperly reconfig

ures the balance Congress struck in the Antiterrorism and Effective Death Penalty Act of 1996 (AEDPA) between state interests and individual constitutional rights. By the Court’s telling, its holding (however implausible) is compelled by statute. Make no mistake. Neither AEDPA nor this Court’s precedents re quire this result. I respect

fully dissent.

I The majority sets forth the gruesome nature of the mur

-3 Cite as: 596 U. S. ____ (2022)

S OTOMAYOR , J., dissenting
ders with which respondents we re charged. Our Constitu

tion insists, however, that no matter how heinous the crime, any conviction must be secured respecting all constitutional protections. The history of respondents’ trials and their state postconviction proceedings illustrates the breakdown in the adversarial system caused by ineffective assistance of counsel, a violation of the Sixth Amendment.

A Respondent Barry Lee Jones was charged with the mur

der of his girlfriend’s 4-year-old daughter, Rachel Gray. The State argued that Rachel died as a result of an injury she sustained while in Jones’ care. Jones’ trial counsel failed to undertake even a cursory investigation and, as a result, did not uncover readily available medical evidence that could have shown that Rachel sustained her injuries when she was not in Jones’ care. Having heard none of this evidence, the jury convicted Jones and the trial judge sen

tenced him to death. Jones filed for postconvicti on review in Arizona state court. Under Arizona law, Jo nes was not permitted to ar

gue on direct appeal that his trial counsel rendered consti

tutionally ineffective assistanc e; accordingly, state postcon

viction review was his first opportunity to raise his trialineffectiveness claim. See State v. Spreitz , 202 Ariz. 1, 3, 39 P. 3d 525, 527 (2002). At this stage, however, Jones was met with another egregious failure of counsel. Arizona state law sets minimum qualific ations that attorneys must meet to be appointed in capital cases like Jones’, but the Arizona Supreme Court waived those requirements in Jones’ case, and the state co urt appointed postconviction counsel who lacked those qualifications. See Jones v. Ryan

, 327 F. Supp. 3d 1157, 1214 (Ariz. 2018) (citing Ariz. Rev. Stat. Ann. §13–4041 (2019)). Jones’ new counsel conducted almost no investigation outside of the evidence in the trial4 SHINN v. MARTINEZ RAMIREZ

S OTOMAYOR , J., dissenting record. In short, Jones’ postconviction counsel failed to in

vestigate the ineffective assistance of Jones’ trial counsel. Counsel moved for the appointment of an investigator, but did so under the wrong provision of Arizona law. The mo

tion was denied. Counsel ulti mately filed a petition for postconviction relief that failed to advance any argument that Jones’ trial counsel was ineffective for failing to inves

tigate the State’s medical evidence. Arizona courts denied the petition. See ante, at 4–5. Jones then sought federal habeas relief, at last repre

sented by competent counsel, and alleged that his trial counsel provided ineffective assistance by failing ade

quately to investigate his case. The District Court held an evidentiary hearing at which Jo nes presented evidence that the injuries to Rachel could no t have been inflicted at the time the State alleged that Jones was with her, and that this evidence would have been readily available to Jones’ trial and state postconviction counsel, had they investi

gated the case. The District Court concluded that Jones’ postconviction counsel had rend ered ineffective assistance in failing to raise this claim in state postconviction proceed

ings and therefore held that Jones could raise it for the first time in federal court under Martinez . The District Court also relied on this evidence to hold, on the merits, that Jones received ineffective assi stance at trial. The court found that there was a “reasonable probability that the jury would not have unanimously convicted [Jones] of any of the counts” if Jones’ trial counsel had “adequately investigated and presented medical and other expert testimony to rebut the State’s theory” of Jones’ guilt. 327 F. Supp. 3d

, at 1211. Arizona moved to stay the granting of the habeas writ by arguing that 28 U. S. C. §2254(e)(2), a provision enacted as part of AEDPA, barred the District Court from considering on the merits the evidence that Jones developed to satisfy Martinez ’s requirements. The Di strict Court denied the motion, and the Ninth Circuit affirmed in relevant part.5 Cite as: 596 U. S. ____ (2022)

S OTOMAYOR , J., dissenting Relying on Martinez ’s recognition that “ ‘[c]laims of ineffec

tive assistance at trial ofte n require investigative work, ’” the Ninth Circuit concluded that “§2254(e)(2) does not pre

vent a district court from co nsidering new evidence, devel

oped to overcome a procedural default under Martinez v. Ryan , when adjudicating the underlying claim on de novo review.” 943 F. 3d 1211, 1222 (2019) (quoting Martinez , 566 U. S., at 11).

B Respondent David Ramirez wa s convicted for the capital murders of his girlfriend and her daughter. At the sentenc

ing phase, the state court appointed a psychologist to con

duct a mental health evaluation. Ramirez’s counsel failed to provide the psychologist with evidence that Ramirez had an intellectual disability and failed to develop a claim of in

tellectual disability to present in mitigation against the im

position of a death sentence and in support of the imposition of a sentence of life without parole. Ramirez was sentenced to death. As in Jones’ case, an Arizona state court appointed Ramirez counsel for his state postconviction claim. And as in Jones’ case, state postconviction proceedings were Ramirez’s first opportunity to raise a claim of trial ineffec

tiveness. Ramirez’s postconvi ction attorney, however, did not conduct any investigation beyond the existing trial rec

ord, despite being aware of in dications that Ramirez might have intellectual disabilities, including that his mother drank when she was pregnant with him and that he demon

strated developmental delays as a child. Nor did Ramirez’s postconviction counsel argue that Ramirez’s trial counsel provided ineffective assistance by failing to develop and present this mitigating evidence. Arizona courts denied Ramirez’s postconviction petition. Citing “ ‘concerns regarding the quality’ ” of Ramirez’s6 SHINN v. MARTINEZ RAMIREZ

S OTOMAYOR , J., dissenting
prior counsel, a Federal Dis trict Court appointed the Ari

zona Federal Public Defender to represent him in federal habeas proceedings. Ramirez v. Ryan , 937 F. 3d 1230, 1238 (CA9 2019). In his habeas petition, Ramirez raised a claim concerning the ineffectiveness of his trial counsel. In sup

port of his claim, Ramirez submitted evidence from family members, whom trial counsel and state postconviction counsel had never contacted, revealing the depths of abuse and neglect Ramirez experienced as a child and the life-long manifestations of his possible disability. The evidence showed that Ramirez grew up eating on the floor and sleep

ing on dirty mattresses in houses filthy with animal feces; that Ramirez’s mother would beat him with electrical cords; and that Ramirez displayed multiple apparent developmen

tal delays, including “delayed walking, potty training, and speech” and inability to maintain basic hygiene or to use utensils to eat. Id. , at 1239. In addition, the court-ap

pointed psychologist who evaluated Ramirez during the sentencing phase of trial averred to the habeas court that if trial counsel had provided him with Ramirez’s school rec

ords and prior IQ scores, he would have thought they sug

gested intellectual disability and insisted on more compre

hensive testing. 1 Finally, Ramirez’s trial counsel submitted an affidavit stating that she had not been “prepared to han

dle ‘the representation of someone as mentally disturbed as . . . Ramirez’ ” and explaining that the evidence from

——————

1 This evidence would have been rele vant for the jurors’ penalty delib

erations. Arizona law requires the pe nalty phase jury to consider, in de

ciding whether to impose a death sentence, certain “mitigating circum

stances,” including the “defendant ’s capacity to appreciate the wrongfulness of his conduct.” Ariz. Rev. Stat. Ann. §13–751(G)(1). The Constitution guarantees convicted ca pital defendants the right to pre

sent mitigating evidence. See Eddings v. Oklahoma , 455 U. S. 104 (1982).7 Cite as: 596 U. S. ____ (2022)

S OTOMAYOR , J., dissenting Ramirez’s family members, had she uncovered it in an in

vestigation, “ ‘would have changed the way [she] handled both [Ramirez’s] guilt phase and his sentencing phase.’ ” Id. , at 1240. In light of this evidence, Ramirez sought an opportunity to develop his trial-ineffectiveness claim fur

ther. 2 The District Court denied relief on Ramirez’s trial-inef

fectiveness claim and declined to allow further evidentiary development. On appeal, Arizona conceded that Ramirez’s postconviction counsel perfor med deficiently. The Ninth Circuit reversed and remanded, holding that Ramirez had satisfied the requirements of Martinez because postconvic

tion counsel had provided in effective representation and Ramirez’s trial-ineffectiveness claim was substantial. The Ninth Circuit directed the Dis trict Court to allow eviden

tiary development of Ramirez’ s trial-ineffectiveness claim, recognizing that he had been “precluded from such develop

ment because of his post-con viction counsel’s ineffective representation.” 937 F. 3d, at 1248.

II
Martinez and Trevino afford habeas petitioners like Jones and Ramirez the opportuni ty to bring certain trialineffectiveness claims for the firs t time in federal court. The question before the Court is whether Jones and Ramirez can make good on that opportunity by developing evidence in support of these claims, or whether AEDPA nevertheless requires them to rely on the state-court rec

ords, constructed by ineffecti ve trial and postconviction

——————

2 The District Court initially denied Ramirez’s petition, and Ramirez appealed. While his appeal was pend ing in the Ninth Circuit, this Court decided Martinez v. Ryan , 566 U. S. 1 (2012), and the Ninth Circuit re

manded Ramirez’s appeal to the District Court in light of that decision. See App. 452–453. On remand, the District Court ordered supplemental briefing, and Ramirez submitted affidavits from his family members and trial counsel in support of his tr ial-ineffectiveness claim. See id., at 454– 455, 473–474.8 SHINN v. MARTINEZ RAMIREZ

S OTOMAYOR , J., dissenting counsel, because they “failed to develop the factual basis of [the ineffective assistance] claim[s] in State court proceed

ings.” 28 U. S. C. §2254(e)(2). Under this Court’s precedents, the answer is clear. Mar

tinez and Trevino establish that petitioners are not at fault for any failure to raise their claims in state court in these circumstances. Other precedents hold that AEDPA’s §2254(e)(2)’s “failed to develop” language, too, incorporates a threshold requirement that th e petitioner be at fault for not developing evidence. A petitioner cannot logically be faultless for not bringing a claim because of postconviction counsel’s ineffectiveness, yet at fault for not developing its evidentiary basis for exactly the same reason.

A This Court’s precedents, culminating in Martinez and Trevino , explain the circumstances under which habeas pe

titioners are deemed accountable for their attorneys’ fail

ures to present claims in state court. A petitioner who does not properly present a claim in a state proceeding generally may not raise the claim in federal court, because the claim has been “procedurally defaulted.” See, e.g., Murray v. Car

rier , 477 U. S. 478, 486 (1986). A federal court, however, can excuse a procedural default and permit a petitioner to rais e a claim for the first time in federal court if the petitioner can “demonstrate cause for the procedural default in state court and actual prejudice as a result of the alleged violation of federal law.” Maples

v. Thomas , 565 U. S. 266, 280 (2012) (internal quotation marks and alterations omitted). This Court has held that “[c]ause for a procedural default exists where something ex

ternal to the petitioner . . . that cannot fairly be attributed to him impeded his efforts to comply with the State’s proce

dural rule.” Ibid. (internal quotation marks and alterations omitted). As a general matter, attorney error does not constitute9 Cite as: 596 U. S. ____ (2022)

S OTOMAYOR , J., dissenting cause to excuse procedural default because courts attribute attorneys’ errors to their clients. Coleman v. Thompson

, 501 U. S. 722, 753 (1991). In certain situations, however, attorney error will instead “be seen as an external factor” and therefore constitute cause. Id., at 754. In Maples , we held that where an attorney abandoned his client without notice, “principles of agency law and fundamental fairness” required finding cause to excuse a procedural default, as the petitioner had been “disarmed by extraordinary circum

stances quite beyond his control.” 565 U. S., at 289. In Coleman , we explained that “[a]tt orney error that consti

tutes ineffective assistance of counsel” similarly demon

strates cause to excuse procedural default in the context of a direct appeal. 501 U. S., at 753–754. Coleman explained that error that “constitutes a vi olation of petitioner’s right to counsel . . . must be seen as an external factor, i.e., ‘im

puted to the State’ ” because the Sixth Amendment places the burden of guaranteeing effective assistance of counsel on the State. Id., at 754. Coleman left unanswered the question whether ineffec

tive assistance of counsel at the postconviction stage, where defendants generally do not hav e a constitutional right to counsel, could also constitute c ause to excuse default. See id. , at 755. This question is critical in Arizona and other States that do not allow de fendants to raise trial-ineffec

tiveness claims on direct appeal, where individuals are con

stitutionally entitled to effe ctive counsel, and instead re

quire them to raise these claims for the first time in collateral proceedings, in which this Court has not recog

nized a constitutional right to counsel. Martinez , 566 U. S. 1, held that in these States, postcon

viction counsel’s failure to raise a substantial trial-ineffec

tiveness claim could constitute cause to excuse a procedural default. The Court observed that where a state collateral proceeding is the first time that a petitioner can press a trial-ineffectiveness claim, the collateral proceeding is “the10 SHINN v. MARTINEZ RAMIREZ

S OTOMAYOR , J., dissenting equivalent of a prisoner’s dire ct appeal,” and constitutes the petitioner’s “ ‘one and only appeal’ ” as to that claim. Id., at 8, 11 (quoting Coleman , 501 U. S., at 756). Because this result was occasioned by the State’s “deliberat[e] cho[ice] to move [such] claims outside of the direct-appeal process, where counsel is constitutionally guaranteed,” the Court held that the general attorney-attribution rule did not ap

ply where postconviction counsel rendered ineffective assis

tance, just as it would not if appellate counsel on direct re

view had done so. Martinez

, 566 U. S., at 13–14, 16. Instead, Martinez held, for a habeas petitioner with a “sub

stantial” underlying trial-ineffectiveness claim who alsohas the misfortune of being represented by ineffective postconviction counsel, the failure of postconviction counsel to raise the trial-ineffectiveness claim is not properly attribut

able to the petitioner. Id., at 14. A year later, in Trevino , 569 U. S. 413, the Court reaf

firmed and extended Martinez ’s core holding. Trevino held that where a State does not offer “a meaningful opportunity to present a claim of ineffecti ve assistance of trial counsel on direct appeal,” a defend ant whose collateral-review counsel renders ineffective assistance has demonstrated cause to excuse the procedural default of his trial-ineffec

tiveness claim. 569 U. S., at 428. 3

B There is no dispute here t hat respondents’ trial-ineffec

tiveness claims clear the procedural default hurdle under Martinez and Trevino . The question is whether a habeas petitioner can be faultless for a procedural default under

——————

3 While Martinez analyzed a state statutory regime that expressly re

quired defendants to raise an ineffective-assistance-of-trial-counsel claim on collateral review, Trevino confronted a state statutory regime that left open the theoretical possibili ty of raising such a claim on direct appeal, but made it “ ‘virtually impossible’ ” for defendants to do so. 569 U. S.

, at 423.11 Cite as: 596 U. S. ____ (2022)

S OTOMAYOR , J., dissenting

Martinez and nonetheless barred by AEDPA’s §2254(e)(2) from seeking an evidentiary hearing in federal court, sub

ject to exceptions not applicable here, because the petitioner “failed to develop the factual basis of [the procedurally de

faulted] claim in State court proceedings.” Precedent establishes that §2254(e)(2) incorporates a threshold, fault-based “fail[ure] to develop” standard that must be understood in conjunction with the fault-based rea

soning in Martinez . In Williams v. Taylor , 529 U. S. 420 (2000), this Court examined what it means to have “failed to develop the factual basis of a claim” under §2254(e)(2).The Court concluded that this language imposes a faultbased standard, meaning that it erects a bar only to those who bear some responsibility for a lack of evidentiary de

velopment in state-court proceedings. The Court acknowl

edged that “fail” is “sometimes used in a neutral way, not importing fault or want of diligence.” Id., at 431. As a mat

ter of ordinary meaning, howeve r, the Court concluded that “fail” in §2254(e)(2) connotes “some omission, fault, or neg

ligence.” Ibid. The Court explained that “a person is not at fault when his diligent efforts to perform an act are thwarted” by an external force. Id., at 432. Williams found further support for its fault-based read

ing of “failed to develop” in pre-AEDPA cases that foreshad

owed the language of §2254(e)(2). Specifically, Williams noted the similarity between the text of §2254(e)(2) and the language of the Court’s decision in Keeney v. Tamayo-Reyes

, 504 U. S. 1 (1992). The Williams Court reasoned that when it enacted AEDPA, Congress had “raised the bar Keeney im

posed on prisoners who were not diligent” ( i.e., those who were at fault) “in state-court proceedings.” 529 U. S., at 433 (emphasis added). At the same time, however, “the opening clause of §2254(e)(2) codifies Keeney ’s threshold standard of diligence.” Id., at 434. Phrased differently, under AEDPA, “[i]f there has been no lack of diligence at the relevant stages in the state proceedings, the prisoner has not ‘failed12 SHINN v. MARTINEZ RAMIREZ

S OTOMAYOR , J., dissenting to develop’ the facts under §2254(e)(2)’s opening clause, and he will be excused from showing compliance with the bal

ance of the subsection’s requirements.” Id., at 437. The reasoning of Martinez and Trevino applies with equal force to the threshold diligence/fault standard of Keeney

, Williams , and §2254(e)(2). Under Williams , whether peti

tioners who satisfy Martinez are nevertheless subject to §2254(e)(2) turns on whether they were at fault for not de

veloping evidence in suppo rt of their trial-ineffectiveness claims in state postconviction proceedings. All agree that a habeas petitioner is not at faul t when the responsibility for an error is properly imputed to the State or to some other external factor. Martinez cases are among the rare ones in which attorney error constitute s such an external factor. That is because a State’s “delib erat[e] cho[ice]” to move trial ineffectiveness claims outside ofdirect appeal and into postconviction review “significant ly diminishes prisoners’ abil

ity to file such claims.” Martinez , 566 U. S., at 13. There is nothing nefarious about this choice, but it is “not without consequences.” Ibid. Together, Martinez

, Trevino , and Wil

liams demonstrate that when a State both provides a crim

inal defendant with ineffective trial counsel and decides to remove his trial-ineffectivene ss claim from appellate re

view, postconviction counsel’s ineffectiveness cannot fairly be attributed to the defendant, and he therefore has not “failed to develop the factual basis of [his] claim.” §2254(e)(2). Any other reading hollows out Martinez and Trevino

. Martinez repeatedly recognized that to prove a trial-ineffec

tiveness claim (or even to show that it is “substantial”), ha

beas petitioners frequently must introduce evidence outside of the trial record. See, e.g., 566 U. S., at 13 (“Ineffective

assistance claims often depend on evidence outside the trial record”). Ineffective-assistance claims frequently turn on errors of omission: evidence that was not obtained, wit

-13 Cite as: 596 U. S. ____ (2022)

S OTOMAYOR , J., dissenting

nesses that were not contacte d, experts who were not re

tained, or investigative leads that were not pursued. Demonstrating that counsel failed to take each of these measures by definition requires evidence beyond the trial record. See Trevino , 569 U. S., at 413 (observing that “ ‘the inherent nature of most ineffective assistance’ ” claims means that the “trial court record will often fail to ‘contai[n] the information necessary to s ubstantiate’ the claim”); Brief for Federal Defender Capital Habeas Units as Amici Curiae 4–6. Indeed, the very reason States like Arizona might choose to reserve a trial-ine ffectiveness claim for a collat

eral proceeding is to allow development of the factual basis for the claim. Martinez , 566 U. S., at 13. To hold a peti

tioner at fault for not developing a factual basis because of postconviction counsel’s ineffectiveness in the Martinez context, however, would be to eliminate altogether such ev

identiary development and doom many meritorious trial-in

effectiveness claims that satisfy Martinez . Such a rule is not only inconsistent with the reasoning of Martinez and Trevino but renders those decisions meaningless in many, if not most, cases.

C Applying this interpretation of §2254(e)(2) here makes clear that Jones and Ramirez are not at fault for their at

torneys’ failures to develop the state-court record. In Jones’ case, the District Court found, and the Ninth Circuit agreed, that Jones satisfied the demanding requirements of Martinez : Arizona appointed postconviction counsel who did not meet the minimum qualifications for appointment and who failed to raise a substantial (indeed, meritorious) trial-ineffectiveness claim. In Ramirez’s case, too, the Ninth Circuit held that postco nviction counsel was ineffec

tive for failing to investigate Ramirez’s upbringing (despite clear indications of his disability) and for failing to raise or develop a substantial claim of trial ineffectiveness. The14 SHINN v. MARTINEZ RAMIREZ

S OTOMAYOR , J., dissenting

lower courts thus held that both respondents satisfied the demanding requirements of Martinez , holdings that the Court does not question. By definition, Jones and Rami rez are not at fault for their state postconviction counsel’s failures to develop evidence. Jones and Ramirez acted diligently, but their attorneys’ er

rors, paired with the State’s choice of how to structure their review proceedings, constituted external impediments. As a result, Jones and Ramirez have not “failed to develop” the factual bases of their claims, and AEDPA’s §2254(e)(2), properly interpreted, poses no bar to evidentiary develop

ment in federal court.

III Rejecting the teachings of Martinez and Trevino

, the Court adopts an irrational reading of §2254(e)(2). The Court begins with the uncontested proposition that, in the ordinary case, a habeas petitioner “ ‘must bear the risk of attorney error.’ ” Ante , at 11 (quoting Coleman , 501 U. S., at 753). From there, the Court leaps to the conclusion that a petitioner is at fault for not developing the evidentiary record on a trial-ineffectiveness claim even if that lack of development was the result of his postconviction counsel’s ineffective assistance. Ante , at 12. The Court’s analysis rests on two fundamental errors. First, the Court eviscerates Martinez and Trevino and mischaracterizes other precedents. Second, the Court relies upon its own mistaken under standing of AEDPA’s policies and the state interests at issue, recycling claims rejected by the Martinez Court and ignoring the careful balance struck by Congress. In doing so, the Court gives short shrift to the egregious breakdowns of the adversarial system that oc

curred in these cases, breakdowns of the type that federal habeas review exists to correct.15 Cite as: 596 U. S. ____ (2022)

S OTOMAYOR , J., dissenting

A The doctrinal consequence of the Court’s distortion of precedent is to render Martinez and Trevino dead letters in the mine run of cases. As explained, those precedents are premised on the understanding that a habeas petitioner is not responsible for a postconvi ction attorney’s ineffective failure to assert a substantial trial-ineffectiveness claim in States that do not offer petitioners a meaningful oppor

tunity to raise such claims on direct appeal. The Court, however, does not grapple with this logic on its own terms. Instead, the Court limits Martinez and Trevino to their facts, emptying them of all meaning in the ordinary case (where, as those precedents explain, a trial-ineffectiveness claim will necessarily rely on evidence beyond the trial rec

ord). Tellingly, the Court relies on the dissent in Trevino to support its disregard of these cases’ reasoning. See ante, at 18. The Court’s analysis also rests on a misplaced view of Williams . The Court fixates on Williams ’ statement that §2254(e)(2) “raised the bar Keeney imposed on prisoners who were not diligent in state-court proceedings.” 529 U. S., at 433; see ante, at 16. The Court emphasizes the first part of that statement while ignoring its qualification: that §2254(e)(2) raised the bar for “prisoners who were not diligent.” In other words, it is undisputed that the “bar for excusing a prisoner’s failure to develop the state-court rec

ord” is an onerous one, ante, at 12; the question is whether, in this context, a habeas petitioner has failed to develop the record in the first place. Martinez and Trevino make clear that habeas petitioners in Jones’ and Ramirez’s position do not lack diligence and are not at fault for the failures of their ineffective trial and postconviction counsel. The Court further charges that respondents’ interpreta

tion of §2254(e)(2) “lacks any principled limit.” Ante, at 17. Here again, the Court resuscitates a complaint that previ

ously was relegated to a dissent. See Martinez , 566 U. S.,16 SHINN v. MARTINEZ RAMIREZ

S OTOMAYOR , J., dissenting at 19 (Scalia, J., dissenting) (“[N]o one really believes that [the holding of Martinez ] will remain limited to ineffective

assistance-of-trial-counsel cases”). The complaint is just as unavailing now that it has captured a majority. Respond

ents’ interpretation only affe cts habeas petitioners raising substantial trial-ineffectiveness claims in the subset of States that limit such claims to postconviction review, just

as Martinez did. In that context, postconviction review is a prisoner’s “one and only appeal” of a trial-ineffectiveness claim, Coleman , 501 U. S., at 756 (internal quotation marks omitted; emphasis deleted), and the ineffective assistance of counsel at that stage forecl oses review of a crucially im

portant constitutional right. Any assertion that respond

ents’ interpretation of the statute would blow the door open to myriad other claims is hyperbole that this Court, until today, consistently has rejected. Finally, the Court finds it implausible that Congress would have considered the threshold diligence inquiry un

der §2254(e)(2) to account for the Martinez context. Ante

, at 16–17. But Congress legislated against the backdrop of Coleman

. Coleman , in turn, made clear (decades before Martinez ) that in certain circumstances where attorney er

ror could be “seen as an external factor, i.e. , ‘imputed to the State,’ ” including the ineffective assistance of counsel on di

rect appeal, the prisoner would not properly be deemed at fault. Coleman , 501 U. S., at 754. Moreover, it is not un

common for Congress to adopt statutory language that in

corporates an evolving judicial doctrine, see, e.g., Kimble v. Marvel Entertainment, LLC , 576 U. S. 446, 461 (2015), and there is no reason this Court should second-guess Congress’ choice to incorporate a judici ally created diligence doctrine here.

B Much of the Court’s opinion focuses not on the text of §2254(e)(2), nor on the relevant precedents, but on what the17 Cite as: 596 U. S. ____ (2022)

S OTOMAYOR , J., dissenting Court views as AEDPA’s unyielding purpose: ensuring that federal courts “afford unwavering respect” to state court criminal proceedings. Ante, at 21; see also ante , at 6–9, 18– 19, 20–21. The Court seriously errs by suggesting that AEDPA categorically prioriti zes maximal deference to state-court convictions over vindication of the constitu

tional protections at the core of our adversarial system. It is of course true that AEDPA’s rules are designed to “ensure that state-court judgme nts are accorded the finality and respect necessary to preserve the integrity of legal pro

ceedings within our system of federalism.” Martinez , 566 U. S., at 9. The enacting Congress, however, did not pursue these aims at all costs. AEDPA does not render state judg

ments unassailable, but strikes a balance between respect

ing state-court judgments and preserving the necessary and vital role federal courts pl ay in “guard[ing] against ex

treme malfunctions in the state criminal justice sys

tems.” Harrington v. Richter , 562 U. S. 86, 102–103 (2011) (internal quotation marks omit ted). Indeed, “ ‘Congress has recognized that federal habeas corpus has a particu

larly important role to play in promoting fundamental fair

ness in the imposition of the death pen

alty.’ ” Christeson v. Roper , 574 U. S. 373, 377 (2015) ( per curiam ). Absent that role, what this Court regularly calls “the Great Writ” hardly would be worthy of the label. See,
e.g., Holland v. Florida , 560 U. S. 631, 649 (2010). The Court today supplants the balance Congress struck with its single-minded focus on finality. In doing so, it over

states the harm to States that would result from allowing petitioners to develop facts in support of Martinez claims. See ante, at 18. Importantly, Martinez applies only where the underlying claim is one of trial ineffectiveness, and only if a petitioner demonstrates that the claim is “substantial.” 566 U. S., at 14. The Court reaches to support its holding by yet again repackaging a dissenter’s warning, this time18 SHINN v. MARTINEZ RAMIREZ

S OTOMAYOR , J., dissenting

that Martinez would “put a significant strain on state re

sources.” Id., at 22 (opinion of Scalia, J.). Nearly a decade of experience with Martinez , however, has proved this un

founded prediction false. In a 9-year sample of three States (Florida, Pennsylvania, and So uth Carolina), federal courts adjudicated 1,200 habeas petitions raising Martinez claims. See Brief for Habeas Scholars as Amici Curiae 7–8. These courts held evidentiary hearings in less than two percent of these cases. Ibid. The lower federal courts, in other words, are perfectly capable of policing Martinez ’s limits. There is no reason to expect that to change from an affirmance here. In the same vein, the Court bemoans the “sprawling evi

dentiary hearing” conducted by the District Court in Jones ’

case. Ante , at 19. Of course, the scope of the District Court’s hearing (including evidence from medical experts, forensic experts, law enforcement perso nnel, and others) was neces

sary only because trial counsel failed to present any of that evidence during the guilt phase of Jones’ capital case. Far from constituting an inappropri ate and “wholesale relitiga

tion of Jones’s guilt,” ibid. , the District Court’s hearing was wide-ranging precisely because the breakdown of the adver

sarial system in Jones’ case was so egregious. The Court suggests that evidentiary hearings like Jones’ will “encourag[e] prisoners” to “ ‘sandba[g]’ state courts” by strategically holding back clai ms from state postconviction review to present them for the first time in federal court. Ante, at 22. That claim is odd, particularly in this context. It is a State’s decision to divert trial-ineffectiveness claims from direct appeal to postconvi ction review, and then to pro

vide ineffective postconviction counsel, that results in the failure to raise or develop such claims before state courts. No habeas petitioner or postco nviction counsel could possi

bly perceive a strategi c benefit from failing to raise a meri

torious trial-ineffectiveness claim in an available forum. Indeed, the whole thrust of Jones’ and Ramirez’s argument is that their Sixth Amendment claims were so obvious that19 Cite as: 596 U. S. ____ (2022)

S OTOMAYOR , J., dissenting
their state postconviction atto rneys were ineffective in fail

ing to assert them. On the other side of the ledger, the Court understates, or ignores altogether, the gravity of the state systems’ failures in these two cases. To put it bluntly: Two men whose trial attorneys did not provide even the bare minimum level of representation required by the Constitution may be exe

cuted because forces outside of their control prevented them from vindicating their constituti onal right to counsel. It is hard to imagine a more “extreme malfunctio[n],” Harring

ton , 562 U. S., at 102 (internal quotation marks omitted), than the prejudicial deprivation of a right that constitutes the “foundation for our adversary system,” Martinez , 566 U. S., at 12. Nor will the damage be limited to these two cases. Even before Martinez , this Court recognized that a trial record is “often incomplete or inadequate” to demonstrate inade

quate assistance of counsel. Massaro v. United States , 538 U. S. 500, 505 (2003). A trial record “may contain no evi

dence of alleged errors of omission,” like a failure suffi

ciently to investigate a case. Ibid . For a court to discern “whether [any] alleged error was prejudicial,” too, it is ob

vious that “additional factual development” may be re

quired. Ibid . The on-the-ground experience of capital ha

beas attorneys confirms this commonsense notion. See Brief for Federal Defender Capital Habeas Units as Amici Curiae 3–4. The Court’s decision thus reduces to rubble many habeas petitioners’ Sixth Amendment rights to the effective assistance of counsel. Contrary to the Court’s account, the fundamental fair

ness concerns that arise from this particular type of break

down are not unconditionally eclipsed by the need to accord finality and respect to state-court judgments. Ante, at 18. Finality interests are at their apex when the “essential ele

ments of a presumptively accurate and fair proceeding were present in the proceeding whose result is challenged.”20 SHINN v. MARTINEZ RAMIREZ

S OTOMAYOR , J., dissenting

Strickland v. Washington , 466 U. S. 668, 694 (1984). The effective assistance of counsel is one of those essential ele

ments. See Martinez , 566 U. S., at 12. When the effective assistance of counsel is absent, leaving a severely dimin

ished basis for presuming fairness and accuracy, “finality concerns are somewhat weaker.” Strickland , 466 U. S., at 694. Neither statute nor precedent supports the Court’s as

sertion that the virtues of finality override fundamental fairness to such a degree that meaningful review of life-or

death judgments obtained through such deeply flawed pro

ceedings should be foreclosed. Ultimately, the Court’s decision prevents habeas peti

tioners in States like Arizo na from receiving any guaran

teed opportunity to develop th e records necessary to enforce their Sixth Amendment right to the effective assistance of counsel. For the subset of these petitioners who receive in

effective assistance both at trial and in state postconviction proceedings, the Sixth Amendment’s guarantee is now an empty one. Many, if not most, individuals in this position will have no recourse and no o pportunity for relief. The re

sponsibility for this devastating outcome lies not with Con

gress, but with this Court.

* * * Text and precedent instruct that in States that limit re

view of trial-ineffectiveness claims to postconviction pro

ceedings, habeas petitioners who receive ineffective assis

tance of both trial and postconviction counsel are not responsible for any failure to raise their substantial claim of trial ineffectiveness, nor for any “fail[ure] to develop” ev

idence in support of that claim under AEDPA’s §2254(e)(2). By holding otherwise, the Court not only extinguishes the central promise of Martinez and Trevino , but it makes illu

sory the protections of the Sixth Amendment. I respectfully dissent.