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:
LANIER v. SOUTH CAROLINA
No. 85-5260.
Decided November 4, 1985
Per Curiam.
The motion for leave to proceed in forma pauperis is granted. The petition for a writ of certiorari is granted.
Petitioner was convicted of armed robbery. He contends that his confession should have been suppressed because it was the product of an illegal arrest. The South Carolina Court of Appeals affirmed the trial court’s rejection of his motion to suppress the confession:
“Assuming, without deciding, that Lanier’s arrest was illegal, we nevertheless hold his confession was admissible. A confession made while the accused is in custody before any warrant for his arrest has been issued is not per se inadmissible. State v. Funchess, 255 S. C. 385, 179 S. E. 2d 25, cert. denied, 404 U. S. 915, 92 S. Ct. 236, 30 L. Ed. 2d 189 (1971). Voluntariness remains as the test of admissibility. Id. Even if the arrest was illegal, the confession will be admissible if it is freely and voluntarily given. State v. Plath, 277 S. C. 126, 284 S. E. 2d 221 (1981). Since Lanier does not claim his confession was not voluntary, his argument that the confession was inadmissible is without merit.” App. to Pet. for Cert. A-2.
The South Carolina Supreme Court declined further review.
Under well-established precedent, “the fact that [a] confession may be ‘voluntary’ for purposes of the Fifth Amendment, in the sense that Miranda warnings were given and understood, is not by itself sufficient to purge the taint of the illegal arrest. In this situation, a finding of ‘voluntariness’ for purposes of the Fifth Amendment is merely a threshold requirement for Fourth Amendment analysis.” Taylor v. Alabama, 457 U. S. 687, 690 (1982). See also Dunaway v. New York, 442 U. S. 200, 217-218 (1979); Brown v. Illinois, 422 U. S. 590, 602 (1975). . The reasoning of the South Carolina Court of Appeals is inconsistent with those cases. We therefore vacate the judgment and remand the case to that court for further proceedings.
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: 1