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Text: Neither party has questioned the District Court’s juris­ diction to decide whether federal law preempted the IUB’s decision, and rightly so. In Verizon Md. Inc. v. Public Serv. Comm’n of Md., 535 U. S. 635 (2002), we reviewed a similar federal-court challenge to a state administrative adjudication. In that case, as here, the party seeking federal-court review of a state agency’s decision urged that the Telecommunications Act of 1996 preempted the state action. We had “no doubt that federal courts ha[d federal question] jurisdiction under [28 U. S. C.] §1331 to enter­ tain such a suit,” id., at 642, and nothing in the Telecom­ munications Act detracted from that conclusion, see id., at 643.

Federal courts, it was early and famously said, have “no more right to decline the exercise of jurisdiction which is given, than to usurp that which is not given.” Cohens v. Virginia, 6 Wheat. 264, 404 (1821). Jurisdiction existing, this Court has cautioned, a federal court’s “obligation” to hear and decide a case is “virtually unflagging.” Colorado River Water Conservation Dist. v. United States, 424 U. S. 800, 817 (1976). Parallel state-court proceedings do not detract from that obligation. See ibid.

In Younger, we recognized a “far-from-novel” exception to this general rule. New Orleans Public Service, Inc. v. Council of City of New Orleans, 491 U. S. 350, 364 (1989) (NOPSI). The plaintiff in Younger sought federal-court adjudication of the constitutionality of the California Criminal Syndicalism Act. Requesting an injunction against the Act’s enforcement, the federal-court plaintiff was at the time the defendant in a pending state criminal prosecution under the Act. In those circumstances, we said, the federal court should decline to enjoin the prose­ cution, absent bad faith, harassment, or a patently invalid state statute. See 401 U. S., at 53–54. Abstention was in order, we explained, under “the basic doctrine of equity jurisprudence that courts of equity should not act . . . to restrain a criminal prosecution, when the moving party has an adequate remedy at law and will not suffer irrepa­ rably injury if denied equitable relief.” Id., at 43–44. “[R]estraining equity jurisdiction within narrow limits,” the Court observed, would “prevent erosion of the role of the jury and avoid a duplication of legal proceedings and legal sanctions.” Id., at 44. We explained as well that this doctrine was “reinforced” by the notion of “ ‘comity,’ that is, a proper respect for state functions.” Ibid.

We have since applied Younger to bar federal relief in certain civil actions. Huffman v. Pursue, Ltd., 420 U. S. 592 (1975), is the pathmarking decision. There, Ohio officials brought a civil action in state court to abate the showing of obscene movies in Pursue’s theater. Because the State was a party and the proceeding was “in aid of and closely related to [the State’s] criminal statutes,” the Court held Younger abstention appropriate. Id., at 604.

More recently, in NOPSI, 491 U. S., at 368, the Court had occasion to review and restate our Younger jurispru­ dence. NOPSI addressed and rejected an argument that a federal court should refuse to exercise jurisdiction to review a state council’s ratemaking decision. “[O]nly ex­ ceptional circumstances,” we reaffirmed, “justify a fed­ eral court’s refusal to decide a case in deference to the States.” Ibid. Those “exceptional circumstances” exist, the Court determined after surveying prior decisions, in three types of proceedings. First, Younger precluded federal intrusion into ongoing state criminal prosecutions. See ibid. Second, certain “civil enforcement proceedings” warranted abstention. Ibid. (citing, e.g., Huffman, 420 U. S., at 604). Finally, federal courts refrained from inter­ fering with pending “civil proceedings involving certain orders . . . uniquely in furtherance of the state courts’ ability to perform their judicial functions.” 491 U. S., at 368 (citing Juidice v. Vail, 430 U. S. 327, 336, n. 12 (1977), and Pennzoil Co. v. Texaco Inc., 481 U. S. 1, 13 (1987)). We have not applied Younger outside these three “excep­ tional” categories, and today hold, in accord with NOPSI, that they define Younger’s scope.