opinion: COSTELLO et al. v. WAINWRIGHT, SECRETARY, FLORIDA DEPARTMENT OF OFFENDER REHABILITATION, et al.
  No. 76-5920.
  Decided March 21, 1977
  Per Curiam.
  The motion to strike the brief of the United States as amicus curiae is denied.
  Petitioners in this case attacked the overcrowding in Florida’s prisons as violative of the Cruel and Unusual Punishments Clause of the Eighth Amendment, made applicable to the States by the Fourteenth. A single District Judge found substantial constitutional violations and issued a preliminary injunction ordering the Division of Corrections either to reduce the inmate population or to increase prison capacity. In an en banc decision, the United States Court of Appeals for the Fifth Circuit vacated the District Court’s decision on the ground that only a three-judge court convened in accordance with 28 U. S. C. § 2281 could order such relief. 539 F. 2d 547 (1976).
  On its face, the complaint that initiated this case involved no challenge to state statutes or regulations. There was thus no reason at the beginning of this litigation to suspect that a three-judge court should hear the case. See Moody v. Flowers, 387 U. S. 97, 104 (1967); Baxter v. Palmigiano, 425 U. S. 308 (1976); Morales v. Turman, ante, p. 322. In granting equitable relief, however, the District Court contemplated as one means of relieving the prison system’s unconstitutional overcrowding the possibility that state prison officials would have to violate their statutory duty to continue to accept custody of prisoners properly committed to them. The Court of Appeals concluded that such equitable relief could be granted only by a three-judge court, apparently because it viewed the possible temporary suspension of an otherwise valid state statute to effectuate federally mandated relief as equivalent to finding that statute unconstitutional.
  We cannot agree. The applicability of § 2281 as written turns on whether a state statute is alleged to be unconstitutional, not on whether an equitable remedy for unconstitutional state administrative behavior ultimately impinges on duties imposed under concededly constitutional state statutes. To hold otherwise would require postponing the threshold question of jurisdiction until the merits of the controversy had been fully resolved and the broad outlines of equitable relief discerned. Section 2281 embodies no such wasteful and uncertain mandate.
  Since we conclude that the single District Judge properly exercised full jurisdiction in this case, and that his judgment is, therefore, reviewable on the merits in the Court of Appeals (28 U. S. C. § 1291), the petition for a writ of certiorari and the motion for leave to proceed in forma pauperis are granted, the judgment is reversed, and the case is remanded for further proceedings consistent with this opinion.
  It is so ordered.
choices: comity: civil rights comity: criminal procedure comity: First Amendment comity: habeas corpus comity: military comity: obscenity comity: privacy comity: miscellaneous comity primarily removal cases, civil procedure (cf. comity, criminal and First Amendment); deference to foreign judicial tribunals assessment of costs or damages: as part of a court order Federal Rules of Civil Procedure including Supreme Court Rules, application of the Federal Rules of Evidence, Federal Rules of Appellate Procedure in civil litigation, Circuit Court Rules, and state rules and admiralty rules judicial review of administrative agency's or administrative official's actions and procedures mootness (cf. standing to sue: live dispute) venue no merits: writ improvidently granted no merits: dismissed or affirmed for want of a substantial or properly presented federal question, or a nonsuit no merits: dismissed or affirmed for want of jurisdiction (cf. judicial administration: Supreme Court jurisdiction or authority on appeal from federal district courts or courts of appeals) no merits: adequate non-federal grounds for decision no merits: remand to determine basis of state or federal court decision (cf. judicial administration: state law) no merits: miscellaneous standing to sue: adversary parties standing to sue: direct injury standing to sue: legal injury standing to sue: personal injury standing to sue: justiciable question standing to sue: live dispute standing to sue: parens patriae standing standing to sue: statutory standing standing to sue: private or implied cause of action standing to sue: taxpayer's suit standing to sue: miscellaneous judicial administration: jurisdiction or authority of federal district courts or territorial courts judicial administration: jurisdiction or authority of federal courts of appeals judicial administration: Supreme Court jurisdiction or authority on appeal or writ of error, from federal district courts or courts of appeals (cf. 753) judicial administration: Supreme Court jurisdiction or authority on appeal or writ of error, from highest state court judicial administration: jurisdiction or authority of the Court of Claims judicial administration: Supreme Court's original jurisdiction judicial administration: review of non-final order judicial administration: change in state law (cf. no merits: remand to determine basis of state court decision) judicial administration: federal question (cf. no merits: dismissed for want of a substantial or properly presented federal question) judicial administration: ancillary or pendent jurisdiction judicial administration: extraordinary relief (e.g., mandamus, injunction) judicial administration: certification (cf. objection to reason for denial of certiorari or appeal) judicial administration: resolution of circuit conflict, or conflict between or among other courts judicial administration: objection to reason for denial of certiorari or appeal judicial administration: collateral estoppel or res judicata judicial administration: interpleader judicial administration: untimely filing judicial administration: Act of State doctrine judicial administration: miscellaneous Supreme Court's certiorari, writ of error, or appeals jurisdiction miscellaneous judicial power, especially diversity jurisdiction