What follows is an opinion from the Supreme Court of the United States. Your task is to identify the reason, if any, given by the court for granting the petition for certiorari.

Opinion:
CARNEGIE-MELLON UNIVERSITY et al. v. COHILL, JUDGE, UNITED STATES DISTRICT COURT FOR THE WESTERN DISTRICT OF PENNSYLVANIA, et al.
No. 86-1021.
Argued November 10, 1987
Decided January 20, 1988
Marshall, J., delivered the opinion of the Court, in which Brennan, Blackmun, Stevens, and O’Connor, JJ., joined. White, J., filed a dissenting opinion, in which Rehnquist, C. J., and Scalia, J., joined, post, p. 358.
Walter P. DeForest III argued the cause and filed briefs for petitioners.
Allan J. Opsitnick argued the cause and filed a brief for respondents.
Briefs of amici curiae urging affirmance were filed for the State of California et al. by John K. Van de Kamp, Attorney General of California, R. H. Connett, Assistant Attorney General, and Roderick E. Walston, Deputy Attorney General, joined by the Attorneys General for their respective States as follows: Don Siegelman of Alabama, Grace Berg Schaible of Alaska, John Steven Clark of Arkansas, Warren Price III of Hawaii, James T. Jones of Idaho, Linley E. Pearson of Indiana, David L. Armstrong of Kentucky, William J. Guste, Jr., of Louisiana, Brian McKay of Nevada, Hal Stratton of New Mexico, Anthony J. Celebrezze, Jr., of Ohio, Roger A. Tellinghuisen of South Dakota, W. J. Michael Cody of Tennessee, Jim Mattox of Texas, David L. Wilkinson of Utah, Kenneth 0. Eikenberry of Washington, and Donald J. Hanaway of Wisconsin; and for the Department of Water and Power of the city of Los Angeles by Adolph Moskovitz and Janet K. Goldsmith.
Justice Marshall
delivered the opinion of the Court.
The question before us is whether a federal district court has discretion under the doctrine of pendent jurisdiction to remand a properly removed case to state court when all federal-law claims in the action have been eliminated and only pendent state-law claims remain.
I
Respondents, William and Carrie Boyle, commenced this action by filing a complaint against petitioners, Carnegie-Mellon University (CMU) and John Kordesich, in the Court of Common Pleas of Allegheny County, Pennsylvania. CMU is William Boyle’s former employer; Kordesich is William Boyle’s former supervisor. In the complaint, William Boyle charged CMU with violation of federal and state age-discrimination laws, wrongful discharge, breach of contract, intentional infliction of emotional distress, defamation, and misrepresentation. He stated many of the same claims, as well as tortious interference with a contractual relationship, against Kordesich. Carrie Boyle claimed that these alleged wrongs had caused her to suffer a loss of consortium, loss of companionship, and loss of her husband’s household services. All of respondents’ claims arose from CMU’s discharge of William Boyle.
Petitioners removed the case from state court to the United States District Court for the Western District of Pennsylvania under 28 U. S. C. § 1441(a), which allows a defendant to remove an action that falls within the original jurisdiction of the federal district courts. Petitioners stated that the entire lawsuit fell within the original jurisdiction, and hence within the removal jurisdiction, of the District Court because the complaint stated a claim arising under the Age Discrimination in Employment Act of 1967, 81 Stat. 602, as amended, 29 U. S. C. §§621-634, and the state-law claims in the complaint were pendent to this federal-law claim. Respondents did not contest the removal.
Six months later, respondents moved to amend their complaint to delete the allegations of age discrimination and defamation and the request for damages for loss of consortium. In this motion, respondents stated that they now believed these claims were not tenable. At the same time, respondents filed a motion, conditional upon amendment of the complaint, to remand the suit to state court. Respondents noted that the amendment would eliminate their sole federal-law claim, which had provided the basis for removal of the case, and argued that a remand to state court was appropriate in these circumstances.
After granting the motion to amend, the District Court remanded the remaining claims to the state court in which respondents initially had filed the action. Boyle v. Carnegie-Mellon University, Civ. Action No. 84-2285 (Oct. 10, 1985). In its opinion, the District Court first examined whether any provision of the federal removal statute, 28 U. S. C. §§ 1441-1451, supported a remand. The court noted that two sections of the statute authorize district courts to remand after removal. Under 28 U. S. C. § 1447(c), a court shall remand any case that “was removed improvidently and without jurisdiction”; under 28 U. S. C. § 1441(c), a court may remand any claim that is both independently nonremovable and “separate and independent” of the claim providing the basis for removal of the case. The court held that § 1447(c) did not apply because the removal was jurisdictionally proper and that § 1441(c) did not apply because the remaining state-law claims in the case, although independently nonremovable, were pendent to, rather than separate and independent of, the federal-law claim that had provided the basis for removal. The District Court then stated that in Thermtron Products, Inc. v. Hermansdorfer, 423 U. S. 336 (1976), this Court had suggested that a district court could not remand a removed ease or claim without specific statutory authorization. The District Court noted, however, that a number of appellate decisions since Thermtron had approved the remand of removed pendent state-law claims when the federal-law claim providing the basis for removal had been eliminated from the suit. The court found these later decisions persuasive and consequently opted to remand respondents’ remaining state-law claims.
Petitioners filed a petition for writ of mandamus with the United States Court of Appeals for the Third Circuit, and a divided panel granted the petition. 41 PEP Cases 1046 (1986). Both the majority and the dissent agreed with the District Court’s conclusion that neither § 1447(c) nor § 1441(c) authorized a remand in this case. The majority, after noting a division among the Circuits on the question, held that under Thermtron this absence of statutory authorization precluded the District Court from ordering a remand. The dissent countered that Thermtron’s admonition against remanding removed cases to state court without specific statutory authorization did not extend to cases involving pendent jurisdiction. The dissent noted that under the pendent jurisdiction doctrine, a district court has discretion to dismiss without prejudice cases involving pendent claims, and argued that fairness, efficiency, comity, and common sense supported the authority of removal courts to remand such cases as well.
The Court of Appeals granted respondents’ petition for rehearing en banc and vacated the panel opinions and writ of mandamus. 41 FEP Cases 1888 (1986). After the rehearing, the en banc court divided evenly on the question whether the District Court had authority to remand respondents’ case to state court. Civ. Action No. 85-3619 (Nov. 24, 1986). Accordingly, the court issued an order denying petitioners’ application for a writ of mandamus. This order effectively left undisturbed the remand of respondents’ case.
We granted certiorari, 479 U. S. 1083 (1987), to resolve the split among the Circuits as to whether a district court has discretion to remand a removed case to state court when all federal-law claims have dropped out of the action and only pendent state-law claims remain. We now affirm.
II
The modern doctrine of pendent jurisdiction stems from this Court’s decision in Mine Workers v. Gibbs, 383 U. S. 715 (1966). Prior to Gibbs, this Court had recognized that considerations of judicial economy and procedural convenience justified the recognition of power in the federal courts to decide certain state-law claims involved in cases raising federal questions. See Hurn v. Oursler, 289 U. S. 238, 243-247 (1933). The test for determining when a federal court had jurisdiction over such state-law claims was murky, however, and the lower courts experienced considerable difficulty in applying it. In Gibbs, the Court responded to this confusion, and the resulting hesitancy of federal courts to recognize jurisdiction over state-law claims, by establishing a new yardstick for deciding whether a federal court has jurisdiction over a state-law claim brought in a case that also involves a federal question. The Court stated that a federal court has jurisdiction over an entire action, including state-law claims, whenever the federal-law claims and state-law claims in the case “derive from a common nucleus of operative fact” and are “such that [a plaintiff] would ordinarily be expected to try them all in one judicial proceeding.” 383 U. S., at 725. The Court intended this standard not only to clarify, but also to broaden, the scope of federal pendent jurisdiction. See ibid. (stating that the prior approach, at least as applied by lower courts, was “unnecessarily grudging”). According to Gibbs, “considerations of judicial economy, convenience and fairness to litigants” support a wide-ranging power in the federal courts to decide state-law claims in cases that also present federal questions. Id., at 726.
At the same time, however, Gibbs drew a distinction between the power of a federal court to hear state-law claims and the discretionary exercise of that power. The Gibbs Court recognized that a federal court’s determination of state-law claims could conflict with the principle of comity to the States and with the promotion of justice between the litigating parties. For this reason, Gibbs emphasized that “pendent jurisdiction is a doctrine of discretion, not of plaintiff’s right.” Ibid. Under Gibbs, a federal court should consider and weigh in each case, and at every stage of the litigation, the values of judicial economy, convenience, fairness, and comity in order to decide whether to exercise jurisdiction over a case brought in that court involving pendent state-law claims. When the balance of these factors indicates that a case properly belongs in state court, as when the federal-law claims have dropped out of the lawsuit in its early stages and only state-law claims remain, the federal court should decline the exercise of jurisdiction by dismissing the case without prejudice. Id., at 726-727. As articulated by Gibbs, the doctrine of pendent jurisdiction thus is a doctrine of flexibility, designed to allow courts to deal with cases involving pendent claims in the manner that most sensibly accommodates a range of concerns and values.
In the case before us, respondents’ complaint stated a single federal-law claim and a number of state-law claims. The state-law claims fell within the jurisdiction of the District Court to which the action was removed because they derived from the same nucleus of operative fact as the federal-law claim: CMU’s dismissal of William Boyle. Under the pendent jurisdiction doctrine set forth in Gibbs, however, the District Court had to consider throughout the litigation whether to exercise its jurisdiction over the case. When the single federal-law claim in the action was eliminated at an early stage of the litigation, the District Court had a powerful reason to choose not to continue to exercise jurisdiction. The question that this case presents is whether the District Court could relinquish jurisdiction over the case only by dismissing it without prejudice or whether the District Court could relinquish jurisdiction over the case by remanding it to state court as well.
This Court’s crafting of the pendent jurisdiction doctrine in Gibbs strongly supports the conclusion that when a district court may relinquish jurisdiction over a removed case involving pendent claims, the court has discretion to remand the case to state court. Gibbs itself does not directly address this issue; because the plaintiff in Gibbs filed his suit in federal court, remand was not an option in the case, and the Court spoke only of dismissal. But Gibbs establishes that the pendent jurisdiction doctrine is designed to enable courts to handle cases involving state-law claims in the way that will best accommodate the values of economy, convenience, fairness, and comity, and Gibbs further establishes that the Judicial Branch is to shape and apply the doctrine in that light. Because in some circumstances a remand of a removed case involving pendent claims will better accommodate these values than will dismissal of the case, the animating principle behind the pendent jurisdiction doctrine supports giving a district court discretion to remand when the exercise of pendent jurisdiction is inappropriate.
As many lower courts have noted, a remand generally will be preferable to a dismissal when the statute of limitations on the plaintiff’s state-law claims has expired before the federal court has determined that it should relinquish jurisdiction over the case. In such a case, a dismissal will foreclose the plaintiff from litigating his claims. This consequence may work injustice to the plaintiff: although he has brought his suit in timely manner, he is time barred from pressing his case. Equally important, and more easily overlooked, the foreclosure of the state-law claims may conflict with the principle of comity to States. The preclusion of valid state-law claims initially brought in timely manner in state court undermines the State’s interest in enforcing its law. The operation of state statutes of limitations thus provides a potent reason for giving federal district courts discretion to remand, as well as to dismiss, removed pendent claims.
Even when the applicable statute of limitations has not expired, a remand may best promote the values of economy, convenience, fairness, and comity. Both litigants and States have an interest in the prompt and efficient resolution of controversies based on state law. Any time a district court dismisses, rather than remands, a removed case involving pendent claims, the parties will have to refile their papers in state court, at some expense of time and money. Moreover, the state court will have to reprocess the case, and this procedure will involve similar costs. Dismissal of the claim therefore will increase both the expense and the time involved in enforcing state law. Under the analysis set forth in Gibbs, this consequence, even taken alone, provides good reason to grant federal courts wide discretion to remand cases involving pendent claims when the exercise of pendent jurisdiction over such cases would be inappropriate.
Petitioners argue that the federal removal statute prohibits a district court from remanding properly removed cases involving pendent claims. This argument is based not on the language of Congress, but on its silence. Petitioners note that the removal statute explicitly authorizes remands in two situations. By failing similarly to provide for remands of removed cases involving pendent claims, petitioners assert, Congress intended to preclude district courts from remanding such cases.
We cannot accept petitioners’ reasoning. We do not dispute that Congress could set a limitation of this kind on the federal courts’ administration of the doctrine of pendent jurisdiction. But Congress has not done so, expressly or otherwise, in the removal statute. The principal flaw in petitioners’ argument is that it fails to recognize that the removal statute does not address specifically any aspect of a district court’s power to dispose of pendent state-law claims after removal: just as the statute makes no reference to a district court’s power to remand pendent claims, so too the statute makes no reference to a district court’s power to dismiss them. Yet petitioners concede, as they must, that a federal court has discretion to dismiss a removed case involving pendent claims. Given that Congress’ silence in the removal statute does not negate the power to dismiss such cases, that silence cannot sensibly be read to negate the power to remand them.
Indeed, one section of the removal statute strongly suggests that had Congress decided to address the proper disposition of removed cases involving pendent claims, Congress would have authorized the district courts to remand them. In 28 U. S. C. § 1441(c), Congress dealt with the situation in which a claim that would be removable if sued upon alone is joined with one or more “separate and independent” claims that are not themselves removable. The section provides that the entire case may be removed and that the district court, in its discretion, may either adjudicate all claims in the suit or remand the independently nonremovable claims. See n. 3, supra. This section is not directly applicable to suits involving pendent claims, because pendent claims are not “separate and independent” within the meaning of the removal statute. See American Fire & Casualty Co. v. Finn, 341 U. S. 6, 12-14 (1951) (interpreting the “separate and independent” clause). The section, however, clearly manifests a belief that when a court has discretionary jurisdiction over a removed state-law claim and the court chooses not to exercise its jurisdiction, remand is an appropriate alternative. Thus, the removal statute, far from precluding district courts from remanding pendent state-law claims, actually supports such authority.
As petitioners point out, this Court’s opinion in Thermtron Products, Inc. v. Hermansdorfer, 423 U. S. 336 (1976), contains some language that could be read to support the opposite conclusion. In Thermtron, a District Court remanded a properly removed ease to state court on the ground that the federal docket was overcrowded. This Court held that the remand was improper. In so doing, the Court stated several times that a district court may not remand a case to a state court on a ground not specified in the’removal statute. See id., at 345. See also id., at 345, n. 9 (“Lower federal courts have uniformly held that cases properly removed from state to federal court within the federal court’s jurisdiction may not be remanded for discretionary reasons not authorized by the controlling statute”); id., at 351 (“[W]e are not convinced that Congress ever intended to extend carte blanche authority to the district courts to revise the federal statutes governing removal by remanding cases on grounds that seem justifiable to them but which are not recognized by the controlling statute”). Petitioners, again noting that the removal statute does not explicitly authorize the remand of cases involving pendent state-law claims, argue that Thermtron thus compels a holding that such remands are impermissible.
The language from Thermtron that petitioners cite, viewed in isolation, is admittedly far-reaching, but it loses controlling force when read against the circumstances of that case. The Thermtron decision was a response to a clearly impermissible remand, of a kind very different from that at issue here. In Thermtron, the District Court had no authority to decline to hear the removed case. The court had diversity jurisdiction over the case, which is not discretionary. Thus, the District Court could not properly have eliminated the case from its docket, whether by a remand or by a dismissal. In contrast, when a removed case involves pendent state-law claims, a district court has undoubted discretion to decline to hear the case. The only remaining issue is whether the district court may decline jurisdiction through a remand as well as through a dismissal. The Thermtron opinion itself recognized this distinction by stating that federal courts have no greater power to remand cases because of an overcrowded docket than they have to dismiss cases on that ground. Id., at 344. The implication of this statement, which is confirmed by common sense, is that an entirely different situation is presented when the district court has clear power to decline to exercise jurisdiction. Thermtron therefore does not control the decision in this case.
Petitioners also argue that giving district courts discretion to remand cases involving pendent state-law claims will allow plaintiffs to secure a state forum through the use of manipulative tactics. Petitioners’ concern appears to be that a plaintiff whose suit has been removed to federal court will be able to regain a state forum simply by deleting all federal-law claims from the complaint and requesting that the district court remand the case. Brief for Petitioners 18-20. This concern, however, hardly justifies a categorical prohibition on the remand of cases involving state-law claims regardless of whether the plaintiff has attempted to manipulate the forum and regardless of the other circumstances in the case. A district court can consider whether the plaintiff has engaged in any manipulative tactics when it decides whether to remand a case. If the plaintiff has attempted to manipulate the forum, the court should take this behavior into account in determining whether the balance of factors to be considered under the pendent jurisdiction doctrine support a remand in the case. The district courts thus can guard against forum manipulation without a blanket rule that would prohibit the remand of all cases involving pendent state-law claims.
We conclude that a district court has discretion to remand to state court a removed case involving pendent claims upon a proper determination that retaining jurisdiction over the case would be inappropriate. The discretion to remand enables district courts to deal with cases involving pendent claims in the manner that best serves the principles of economy, convenience, fairness, and comity which underlie the pendent jurisdiction doctrine. Such discretion is precluded neither by the removal statute nor by our decision in Thermtron. We therefore affirm the decision below denying the petition for a writ of mandamus.
It is so ordered.
Section 1441(a) provides:
“Except as otherwise expressly provided by Act of Congress, any civil action brought in a State court of which the district courts of the United States have original jurisdiction, may be removed by the defendant or the defendants, to the district court of the United States for the district and division embracing the place where such action is pending.”
Section 1447(e) provides, in pertinent part:
“If at any time before final judgment it appears that the case was removed improvidently and without jurisdiction, the district court shall remand the case, and may order the payment of just costs.”
Section 1441(c) provides:
“Whenever a separate and independent claim or cause of action, which would be removable if sued upon alone, is joined with one or more otherwise non-removable claims or causes of action, the entire case may be removed and the district court may determine all issues therein, or, in its discretion, may remand all matters not otherwise within its original jurisdiction.”
Petitioners also appealed the District Court’s decision. The Court of Appeals, however, dismissed the appeal on the ground that 28 U. S. C. § 1447(d) bars appeals from remands to state courts with a single exception not applicable to this case.
Compare In re Romulus Community Schools, 729 F. 2d 431 (CA6 1984), Fox v. Custis, 712 F. 2d 84 (CA4 1983), and Hofbauer v. Northwestern National Bank of Rochester, 700 F. 2d 1197 (CA8 1983) (approving remand of remaining pendent state-law claims when all federal claims were eliminated from ease), with Cook v. Weber, 698 F. 2d 907 (CA7 1983), and In re Greyhound Lines, Inc., 598 F. 2d 883 (CA5 1979) (disapproving such remands).
The test established in Hurn v. Oursler provided that if a plaintiff presented “two distinct grounds,” one state and one federal, “in support of a single cause of action,” the federal court had jurisdiction over the entire action, but that if the plaintiff’s assertions amounted to “two separate and distinct causes of action,” the federal court had jurisdiction only over the federal “cause of action.” 289 U. S., at 246. The difficulty with this test, as many commentators noted, was that it centered on the inherently elusive concept of a “cause of action.” See, e. g., Shulman & Jaegerman, Some Jurisdictional Limitations on Federal Procedure, 45 Yale L. J. 393, 397-410 (1936).
In Gibbs, the Court stated that “if the federal claims are dismissed before trial. . . the state claims should be dismissed as well.” 383 U. S., at 726. More recently, we have made clear that this statement does not establish a mandatory rule to be applied inflexibly in all cases. See Rosado v. Wyman, 397 U. S. 397, 403-405 (1970). The statement simply recognizes that in the usual case in which all federal-law claims are eliminated before trial, the balance of factors to be considered under the pendent jurisdiction doctrine — judicial economy, convenience, fairness, and comity-will point toward declining to exercise jurisdiction over the remaining state-law claims.
The Court in Gibbs also indicated that these factors usually will favor a decision to relinquish jurisdiction when “state issues substantially predominate, whether in terms of proof, of the scope of the issues raised, or of the comprehensiveness of the remedy sought.” 383 U. S., at 726.
See, e. g., In re Romulus Community Schools, 729 F. 2d, at 439; Kaib v. Pennzoil Co., 545 F. Supp. 1267, 1271 (WD Pa. 1982).
Moreover, if a plaintiff bringing suit in state court knows that, notwithstanding the expiration of a statute of limitations, a federal court to which a case is removed must dismiss the case upon deciding that the exercise of pendent jurisdiction would be inappropriate, the plaintiff may well decline to allege any federal-law claims. By forgoing all federal-law claims, the plaintiff can insulate himself from the risk that the combination of removal, dismissal under the pendent jurisdiction doctrine, and the expiration of a statute of limitations will foreclose him from litigating his state-law claims. Such protection will appear especially attractive to a plaintiff who has any doubt about the validity of his federal-law claims, because he will know that if the district court dismisses these claims on the merits prior to trial, the court may well decide that the rest of the case is unsuitable for resolution in a federal court and therefore dismiss the remaining claims. Thus, a rule that would require federal courts to dismiss a removed case that is not suitable for resolution in a federal court would operate not only to foreclose some plaintiffs from litigating their state-law claims, but also to chill other plaintiffs from bringing their federal-law claims.
Petitioners argue that the federal courts do not need discretion to remand because they can retain jurisdiction over any case in which the statute of limitations has expired. See Brief for Petitioners 20. At least one Court of Appeals has made the identical argument. See Cook v. Weber, 698 F. 2d, at 909. This solution to the problem of an expired statute of limitations, however, is far from satisfying. Under petitioners’ suggested approach, district courts would retain jurisdiction over eases that apart from the statute-of-limitations concern properly belong in state courts. There is no reason to compel or encourage district courts to retain jurisdiction over such cases when the alternative of a remand is readily available.
In similar vein, the dissent argues that federal courts do not need discretion to remand because some States have saving clauses that alleviate the statute-of-limitations problem arising from the dismissal of cases. But the existence of such clauses in some States, while diminishing the reason for remand in particular eases, hardly reverses our general conclusion that the balance of factors to be weighed under Gibbs, considered in light of the range of state statutes of limitations, supports giving federal district courts the authority to remand eases involving pendent claims.
The dissent’s claim that our decision renders superfluous the two provisions of the removal statute that authorize remands is unjustified. The remand power that we recognize today derives from the doctrine of pendent jurisdiction and applies only to cases involving pendent claims. Sections 1441(e) and 1447(c), as the dissent recognizes, do not apply to eases over which a federal court has pendent jurisdiction. Thus, the remand authority conferred by the removal statute and the remand authority conferred by the doctrine of pendent jurisdiction overlap not at all.
The dissent’s reliance on St. Paul Mercury Indemnity Co. v. Red Cab Co., 303 U. S. 283 (1938), is misplaced for a similar reason. In St. Paul, the defendant removed a diversity case to federal court, and the plaintiff later reduced the amount of damages claimed to a figure below the jurisdictional amount. The District Court remanded the ease to state court, but this Court held that the remand was impermissible. The Court stated that “events occurring subsequent to removal which reduce the amount recoverable ... do not oust the district court’s [diversity] jurisdiction.” Id., at 293. The Court then held that because the District Court continued to have diversity jurisdiction over the case, the court could not relinquish the case, whether through a dismissal or through a remand. See id., at 296. The argument cited by the dissent, focusing on forum manipulation concerns, provided an auxiliary policy consideration supporting the Court’s determination that the District Court’s remand was inappropriate. We agree that forum manipulation concerns are legitimate and serious. See infra, at 357. We do not think, however, that St. Paul fairly, or even plausibly, can be read to suggest that these concerns necessitate a blanket prohibition on remands when the federal district court’s jurisdiction over a case is inherently discretionary.

Question: What reason, if any, does the court give for granting the petition for certiorari?

Choices:
case did not arise on cert or cert not granted
federal court conflict
federal court conflict and to resolve important or significant question
putative conflict
conflict between federal court and state court
state court conflict
federal court confusion or uncertainty
state court confusion or uncertainty
federal court and state court confusion or uncertainty
to resolve important or significant question
to resolve question presented
no reason given
other reason

Answer: 1