UNITED STATES DISTRICT COURT

SOUTHERN DISTRICT OF FLORIDA

MIAMI DIVISION

CASE NO. 22-cv-22788-SCOLA/GOODMAN

SAMUEL BARNABY DYER CORIAT; 

SHEYLA DYER CORIAT; and 

PIERO MARTIN DYER CORIAT, 

Petitioners,

v.

UNITED STATES OF AMERICA and

INTERNAL REVENUE SERVICE, et al., 

Respondents.

____________________________________________/

REPORT AND RECOMMENDATIONS ON 

RESPONDENTS’ MOTION TO DISMISS

Petitioners1 each filed a petition to quash IRS summonses issued to Petitioners’ 

banks requesting their bank statements from 2016 through 2018, as well as information 

regarding any benefits obtained from, and withholding taxes applied to, their accounts. 

Respondents filed a motion to dismiss, arguing generally that the summonses were 

1 United States District Judge Robert N. Scola consolidated Case Nos. 22-cv-22788; 

22-cv-22777; and 22-cv-22785 -- which “involve petitions to quash Internal Revenue 

Service (“IRS”) summons[es] to bank accounts of [ ] Petitioners, who are siblings and are 

represented by the same counsel” -- into Case No. 22-cv-22788 on the basis that they each 

share common questions of both law and fact. [ECF No. 10].

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issued in good faith. [ECF No. 11]. Petitioners filed a response, which also requests an 

evidentiary hearing [ECF No. 18], and Respondents filed a reply [ECF No. 21].

Judge Scola referred to the Undersigned this case “for a ruling on all pre-trial, 

nondispositive matters and for a report and recommendation on any dispositive matters, 

consistent with 28 U.S.C. § 636 and Local Magistrate Judge Rule 1.” [ECF No. 9]. 

For the reasons discussed below, the Undersigned respectfully recommends that 

the District Court grant Respondents’ Motion to Dismiss and deny Petitioners’ request 

for an evidentiary hearing.

I. Background2

Petitioners are siblings [ECF No. 10] who are citizens and residents of Peru. [ECF 

No. 1]. Each Petitioner received notice of a summons, which was issued by the IRS to that 

Petitioner’s banking institution(s). The summonses were issued by the IRS at the request 

of Peru’s tax authority, the National Superintendence of Customs and Tax 

Administration (“SUNAT”) pursuant to the Agreement Between the Government of the 

Republic of Peru and the Government of the United States of America for the Exchange 

of Tax Information (1990) (“TIEA”), which governs the exchange of taxpayer information 

between Peru and the United States. [ECF No. 11]. 

2 Although Petitioners each filed an independent Petition, the Undersigned will use 

the submissions in only 22-cv-22788 when describing the background. The Court has 

already determined that the three cases involve similar questions of law and fact. Further,

for purposes of the background, it is necessary to provide only those facts which are 

shared by Petitioners.

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Upon receiving notice of the summonses, Petitioners each timely filed a petition 

to quash the summonses. According to Petitioners, Peru violated its own laws and 

constitution in issuing the request for assistance. Thus, Petitioners contend that the 

summonses are unlawful and must be quashed.

II. Legal Standard

“[S]ummons enforcement proceedings ‘are to be summary in nature.’” United 

States v. Clarke, 134 S. Ct. 2361, 2367 (2014) (internal citation omitted). Although the 

proceedings are adversarial, “courts may ask only whether the IRS issued a summons in 

good faith, and must eschew any broader role of ‘oversee[ing] the [IRS's] determinations 

to investigate.’” Id. (quoting United States v. Powell, 379 U.S. 48, 56 (1964)). 

In Powell, the Supreme Court listed four factors which the Court must consider in 

determining good faith: (1) “that the investigation will be conducted pursuant to a 

legitimate purpose”; (2) “that the inquiry may be relevant to the purpose”; (3) “that the 

information sought is not already within the [IRS's] possession”; and (4) “that the 

administrative steps required by the [Internal Revenue] Code have been followed.” 379 

U.S. at 57-58.

“The IRS may satisfy its minimal burden merely by presenting the sworn affidavit

of the agent who issued the summons attesting to these facts.” United States v. Medlin, 986 

F.2d 463, 466 (11th Cir. 1993) (citation and internal quotation marks omitted). Once the 

IRS makes its prima facie case for enforcement, “the burden shifts to the party contesting 

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the summons to disprove one of the four elements of the government’s prima facie 

showing or convince the court that the enforcement of the summons would constitute an 

abuse of the court’s process.” La Mura v. United States, 765 F.2d 974, 979–80 (11th Cir. 

1985). “The burden on the contesting party is ‘a heavy one,’ requiring allegations of 

specific facts and introduction of evidence.” United States v. Leventhal, 961 F.2d 936, 940 

(11th Cir. 1992) (emphasis added) (internal citations omitted).

III. Analysis

Respondents included with their initial motion three declarations from Tina 

Masuda, the “Exchange of Information Program Manager in the Large Business and 

International Division (“LB&I”) of the [IRS].” [ECF No. 11-2]. Each declaration contains 

similar information, but concerns the separate summonses issued to Petitioners’ 

respective banks. Further, each declaration contains the necessary information to satisfy 

each of the Powell factors.

In Petitioners’ response, they concede that “the IRS has made its prima facie case 

for enforcement of the summons[es] by filing a sworn affidavit by the investigating

agent.” [ECF No. 18]. However, Petitioners go on to argue that the summonses should be 

quashed on other grounds “because Peru, as the requesting party, made the request in 

bad faith.” Id. According to Petitioners this means that “the IRS was led to issue [the 

summonses] in bad faith and for an improper purpose, and violative of the TIEA and the 

Peruvian Constitution.” Id.

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Petitioners claim that they may challenge the summonses “on any [other] 

appropriate ground.” [ECF No. 18 (quoting United States v. Clarke, 573 U.S. 248, 250, 134 

S. Ct. 2361, 2365, 189 L. Ed. 2d 330 (2014) (alteration added by Petitioners)]. Petitioners 

claim that this is what they are doing -- the “other grounds” being challenging the 

summonses based on Peru’s bad faith, improper purposes, and constitutional violations. 

But they cite no law supporting their contention that the Court can consider the actions 

of Peru in assessing whether the IRS operated in good faith. 

Indeed, in Clarke, the Court considered only whether the IRS operated in good 

faith and, in Reisman v. Caplin, 375 U.S. 440, 449, 84 S. Ct. 508, 513, 11 L. Ed. 2d 459 (1964), 

the case upon which Clarke relied, the Supreme Court included as “appropriate grounds” 

for challenge: (1) allegations that the IRS intended to use the summons for criminal 

prosecution or (2) that the summons sought information protected by attorney client 

privilege.

Petitioners’ grounds for challenge do not fall into any of those identified 

categories. 

In addition to failing to provide any affirmative law which supports the request to 

quash, Petitioners fail to address the ample legal authority which thoroughly rejects their 

contention that the Court may look to the motivations of the foreign country requesting 

the IRS’s assistance or that the Court should require that the IRS conduct its own 

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independent investigation into the motivations of the foreign country and decline to take 

at face value the foreign country’s representations that it complied with its own laws.

For example, in Mazurek v. United States, 271 F.3d 226, 231 (5th Cir. 2001), the Fifth 

Circuit addressed an argument similar to the one raised by Petitioners:

Of the four Powell factors, the only one that Mazurek could conceivably 

contest is the “legitimate purpose” requirement. He attempts to do this by 

arguing that, because he was not a resident of France for the periods 

implicated by the [French Tax Authority (“FTA”)] investigation, any 

request for information covered by the investigation is not for a legitimate 

purpose. Essentially, Mazurek contends that, during the time that the 

determination of his residency status is awaiting final resolution in a French 

court, the FTA’s request cannot be legitimate.

The Fifth Circuit summarily dismissed this argument, stating:

The problem with this reasoning . . . is that Mazurek focuses on the 

legitimacy of the FTA's investigation, not on the legitimacy of the IRS's 

compliance with the FTA's request. Yet, to rebut the Powell requirement, 

Mazurek must show that the IRS is acting in bad faith. As long as the IRS

acts in good faith, it need not also attest to—much lest prove—the good 

faith of the requesting nation. Requiring district courts and the IRS to look 

into the good faith of the requesting country's investigation would—at least 

when, as here, the taxpayer concedes that the treaty partner is interested 

only in civil tax collection—unwisely necessitate an inquiry into the 

propriety of the FTA's actions under French law.

Id. at 231–32 (emphasis added).

This case has been cited with approval in this district. Relying on Mazurek, United 

States District Court Judge Beth Bloom rejected a petitioner’s argument that “the Spanish 

tax authorities were pursuing the case against [the] [p]etitioners in bad faith or for an 

illegitimate purpose and that there had been no determination in the Spanish courts 

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whether [the] petitioners were in fact residents under Spanish law . . . [b]ecause the 

purpose or propriety of the Spanish tax authorities is not relevant.” Verges v. United States, 

No. 18-CV-60235-BB, 2018 WL 3423965, at *2 (S.D. Fla. June 27, 2018).

Similarly, the Tenth Circuit has held that “[the foreign government’s] good faith is 

irrelevant; what matters is the IRS’s good faith in issuing the summons.” Villarreal v. 

United States, 524 F. App'x 419, 423 (10th Cir. 2013) (citing United States v. Stuart, 489 U.S. 

353, 356, 369–70, 109 S.Ct. 1183, 103 L.Ed.2d 388 (1989) for the proposition “that the IRS 

is not required to establish the good faith of the foreign taxing authority, only its own”). 

The same principle has also been adopted by the Ninth Circuit:

Puri cites no authority to support her argument that the court may look 

beyond a facially proper request to determine the true motivations of the 

requesting foreign government. Such an inquiry would run counter to what 

the Supreme Court said in Stuart, that “[s]o long as the IRS itself acts in 

good faith . . . and complies with applicable statutes, it is entitled to 

enforcement of its summons.” 489 U.S. at 370 (emphasis added); see also

Clarke, 573 U.S. at 254 (stating that “summons enforcement proceedings are 

to be ‘summary in nature,’ ” and that courts “must eschew any broader role 

of overseeing ... determinations to investigate [tax liabilities]” (cleaned up)).

Puri v. United States, No. 21-55132, 2022 WL 3585664, at *1 (9th Cir. Aug. 22, 2022)3; see also 

Lidas, Inc. v. United States, 238 F.3d 1076, 1082 (9th Cir. 2001) (“[T]he IRS need not establish 

the good faith of the requesting nation in tax treaty cases.”).

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In a concurring opinion, Judge Patrick J. Bumatay also noted that there are “serious 

separation-of-powers concerns for even raising the prospect that courts can look through 

the Executive branch's decision to comply with an international treaty and surmise the 

motives of a foreign government.” Puri, 2022 WL 3585664, at *2.

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Faced with the overwhelming amount of law which runs contrary to their position, 

Petitioners argue only that “[t]he Court may not be required to consider Peru's good faith 

but should consider the foreign nation's purpose in making the request.” However, as 

stated previously, the inquiry into Peru’s motivation is not a discretionary decision -- it 

is an inquiry which this Court is prohibited from making. Attempting to masquerade the 

term “good faith” with the term “purpose” does not alter this prohibition.

At bottom, Petitioners have conceded that the IRS has sufficiently established a 

prima facie case for the enforcement of the summonses. In attempting to rebut this prima 

facie case, Petitioners have put forward no evidence which would support even a slight 

inference that the IRS is knowingly engaging in any type of bad faith. Notably, Petitioners 

have also not put forward any evidence that Peru is engaged in bad faith; they have 

attached newspaper articles speaking generally about corruption within Peru, Wikipedia 

articles referencing maxims, and an email authenticated by only attorney rhetoric and 

speculation. See, e.g., Clarke, 573 U.S. at 255 (vacating Eleventh Circuit’s decision and 

holding that “[n]aked allegations of improper purpose are not enough: The taxpayer 

must offer some credible evidence supporting his charge”); Sugarloaf Funding, LLC v. 

United States Dept. of Treasury, 584 F.3d 340, 350–351 (1st Cir. 2009) (requiring “a sufficient 

threshold showing that there was an improper purpose”); Fortney v. United States, 59 F.3d 

117, 121 (9th Cir. 1995) (requiring “some minimal amount of evidence” beyond “mere 

memoranda of law or allegations” (internal quotations and alterations omitted)); United 

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States v. Kis, 658 F.2d 526, 540 (7th Cir. 1981) (requiring “develop[ment] [of] facts from 

which a court might infer a possibility of some wrongful conduct”); United States v. 

Garden State Nat. Bank, 607 F.2d 61, 71 (3d Cir. 1979) (requiring “factual[ ] support[ ] by 

the taxpayer's affidavits”).

Because Petitioners have failed to put forth any evidence which would rebut any 

of the Powell factors, nor have they even contended that the IRS falls short in any of the 

Powell factors, an evidentiary hearing is unnecessary. Therefore, the Undersigned 

respectfully recommends that the District Court grant Respondents’ Motion to Dismiss 

and deny Petitioners’ request for an evidentiary hearing.

IV. Conclusion

For the reasons discussed above, the Undersigned respectfully recommends that 

the District Court grant Respondents’ Motion to Dismiss and deny Petitioners’ request 

for an evidentiary hearing.

V. Objections

The parties will have fourteen (14) days from the date of being served with a copy 

of this Report and Recommendations within which to file written objections, if any, with 

United States District Judge Robert N. Scola. Each party may file a response to the other 

party’s objection within fourteen (14) days of the objection. Failure to file objections 

timely shall bar the parties from a de novo determination by the District Judge of an issue 

covered in the Report and shall bar the parties from attacking on appeal unobjected-to 

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factual and legal conclusions contained in this Report except upon grounds of plain error 

if necessary in the interest of justice. See 28 U.S.C. § 636(b)(1); Thomas v. Arn, 474 U.S. 140, 

149 (1985); Henley v. Johnson, 885 F.2d 790, 794 (11th Cir. 1989); 11th Cir. R. 3-1 (2016).

RESPECTFULLY RECOMMENDED, in Chambers, in Miami, Florida, on

February 17, 2023. 

Copies furnished to:

The Honorable Robert N. Scola, Jr.

All counsel of record

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