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:
CORCORAN v. LEVENHAGEN, SUPERINTENDENT, INDIANA STATE PRISON
No. 08-10495.
Decided October 20, 2009
Per Curiam.
An Indiana jury convicted Joseph Corcoran of four counts of murder. Corcoran was sentenced to death. After Corcoran’s challenges to his sentence in the Indiana courts failed, he sought federal habeas relief. Corcoran argued in his federal habeas petition that: (1) the Indiana trial court committed various errors at the sentencing phase; (2) his sentence violated the Sixth Amendment; (8) Indiana’s capital sentencing statute was unconstitutional; (4) the prosecution committed misconduct at sentencing; and (5) he should not be executed because he suffers from a mental illness. See Corcoran v. Buss, 483 F. Supp. 2d 709, 719, 726 (ND Ind. 2007). The District Court granted habeas relief on Corcoran’s claim of a Sixth Amendment violation, and ordered the state courts to resentence Corcoran to a penalty other than death. Id., at 725-726. The District Court did not address Corcoran’s other arguments relating to his sentence, noting that they were “rendered moot” by the order that Corcoran be resentenced because of the Sixth Amendment violation. Id., at 734.
The Seventh Circuit reversed the District Court’s Sixth Amendment ruling. Corcoran v. Buss, 551 F. 3d 703, 712, 714 (2008). Then, without mentioning Corcoran’s other sentencing claims, the Seventh Circuit remanded “with instructions to deny the writ,” stating that “Indiana is at liberty to reinstate the death penalty.” Id., at 714. Corcoran sought rehearing, arguing that the Court of Appeals should have allowed the District Court to consider his additional attacks on his sentence. But the Court of Appeals denied rehearing, again without referring to Corcoran’s undecided claims.
We now grant certiorari and hold that the Seventh Circuit erred in disposing of Corcoran’s other claims without explanation of any sort. The Seventh Circuit should have permitted the District Court to consider Corcoran’s unresolved challenges to his death sentence on remand, or should have itself explained why such consideration was unnecessary.
In its brief in opposition, the State argues that Corcoran’s claims were waived, and that they were in any event frivolous, so that a remand would be wasteful. Brief in Opposition 9-10. Nothing in the Seventh Circuit’s opinion, however, suggests that this was the basis for that court’s order that the writ be denied.
The petition for certiorari and the motion for leave to proceed in forma pauperis are granted. The judgment of the Court of Appeals for the Seventh Circuit is vacated, and the case is remanded for further proceedings consistent with this opinion.
It is so ordered.

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