What follows is an opinion from the Supreme Court of the United States. Your task is to determine the bases on which the Supreme Court rested its decision with regard to the legal provision that the Court considered in the case. Consider "judicial review (national level)" if the majority determined the constitutionality of some action taken by some unit or official of the federal government, including an interstate compact. Consider "judicial review (state level)" if the majority determined the constitutionality of some action taken by some unit or official of a state or local government. Consider "statutory construction" for cases where the majority interpret a federal statute, treaty, or court rule; if the Court interprets a federal statute governing the powers or jurisdiction of a federal court; if the Court construes a state law as incompatible with a federal law; or if an administrative official interprets a federal statute. Do not consider "statutory construction" where an administrative agency or official acts "pursuant to" a statute, unless the Court interprets the statute to determine if administrative action is proper. Consider "interpretation of administrative regulation or rule, or executive order" if the majority treats federal administrative action in arriving at its decision.Consider "diversity jurisdiction" if the majority said in approximately so many words that under its diversity jurisdiction it is interpreting state law. Consider "federal common law" if the majority indicate that it used a judge-made "doctrine" or "rule; if the Court without more merely specifies the disposition the Court has made of the case and cites one or more of its own previously decided cases unless the citation is qualified by the word "see."; if the case concerns admiralty or maritime law, or some other aspect of the law of nations other than a treaty; if the case concerns the retroactive application of a constitutional provision or a previous decision of the Court; if the case concerns an exclusionary rule, the harmless error rule (though not the statute), the abstention doctrine, comity, res judicata, or collateral estoppel; or if the case concerns a "rule" or "doctrine" that is not specified as related to or connected with a constitutional or statutory provision. Consider "Supreme Court supervision of lower federal or state courts or original jurisdiction" otherwise (i.e., the residual code); for issues pertaining to non-statutorily based Judicial Power topics; for cases arising under the Court's original jurisdiction; in cases in which the Court denied or dismissed the petition for review or where the decision of a lower court is affirmed by a tie vote; or in workers' compensation litigation involving statutory interpretation and, in addition, a discussion of jury determination and/or the sufficiency of the evidence.

Opinion:
HAINES v. KERNER et al.
No. 70-5025.
Argued December 6, 1971
Decided January 13, 1972
Stanley A. Bass, by appointment of the Court, 401 U. S. 1008, argued the cause for petitioner. With him on the briefs were Jack Greenberg, James M. Nábrit III, William B. Turner, Alice Daniel, and Max Stern.
Warren K. Smoot, Assistant Attorney General of Illinois, argued the cause for respondents pro hac vice. With him on the brief were William J. Scott, Attorney General, Joel M. Flaum, First Assistant Attorney General, and James B. Zagel, Morton E. Friedman, and Jayne A. Carr, Assistant Attorneys General.
Briefs of amici curiae were filed by Charles H. Baron for Boston College Center for Corrections and the Law, and by Julian Tepper and Marshall J. Hartman for the National Law Office of the National Legal Aid and Defender Assn.
Per Curiam.
Petitioner, an inmate at the Illinois State Penitentiary, Menard, Illinois, commenced this action against the Governor of Illinois and other state officers and prison officials under the Civil Rights Act of 1871,17 Stat. 13, 42 U. S. C. § 1983, and 28 U. S. C. § 1343 (3), seeking to recover damages for claimed injuries and deprivation of rights while incarcerated under a judgment not challenged here. Petitioner’s pro se complaint was premised on alleged action of prison officials placing him in solitary confinement as a disciplinary measure after he had struck another inmate on the head with a shovel following a verbal altercation. The assault by petitioner on another inmate is not denied. Petitioner’s pro se complaint included general allegations of physical injuries suffered while in disciplinary confinement and denial of due process in the steps leading to that confinement. The claimed physical suffering was aggravation of a preexisting foot injury and a circulatory ailment caused by forcing him to sleep on the floor of his cell with only blankets.
The District Court granted respondents’ motion under Rule 12 (b) (6) of the Federal Rules of Civil Procedure to dismiss the complaint for failure to state a claim upon which relief could be granted, suggesting that only under exceptional circumstances should courts inquire into the internal operations of state penitentiaries and concluding that petitioner had failed to show a deprivation of federally protected rights. The Court of Appeals affirmed, emphasizing that prison officials are vested with “wide discretion” in disciplinary matters. We granted certiorari and appointed counsel to represent petitioner. The only issue now before us is petitioner’s contention that the District Court erred in dismissing his pro se complaint without allowing him to present evidence on his claims.
Whatever may be the limits on the scope of inquiry of courts into the internal administration of prisons, allegations such as those asserted by petitioner, however inartfully pleaded, are sufficient to call for the opportunity to offer supporting evidence. We cannot say with assurance that under the allegations of the pro se complaint, which we hold to less stringent standards than formal pleadings drafted by lawyers, it appears “beyond doubt that the plaintiff can prove no set of facts in support of his claim which would entitle him to relief.” Conley v. Gibson, 355 U. S. 41, 45-46 (1957). See Dioguardi v. Durning, 139 F. 2d 774 (CA2 1944).
Accordingly, although we intimate no view whatever on the merits of petitioner’s allegations, we conclude that he is entitled to an opportunity to offer proof. The judgment is reversed and the case is remanded for further proceedings consistent herewith.
Reversed and remanded.
Mr. Justice Powell and Mr. Justice Rehnquist took no part in the consideration or decision of this case.

Question: What is the basis of the Supreme Court's decision?

Choices:
judicial review (national level)
judicial review (state level)
Supreme Court supervision of lower federal or state courts or original jurisdiction
statutory construction
interpretation of administrative regulation or rule, or executive order
diversity jurisdiction
federal common law

Answer: 2
6