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:
IDAHO ex rel. ANDRUS, GOVERNOR, et al. v. OREGON et al.
No. 67, Orig.
Argued November 8, 1976
Decided December 7, 1976
Wayne L. Kidwell, Attorney General of Idaho, argued the cause for plaintiffs. With him on the brief were Terry E. Coffin, Deputy Attorney General, and Matthew J. Mullaney, Jr.
Lee Johnson, Attorney General, argued the cause for defendant State of Oregon. With him on the brief were W. Michael Gillette, Solicitor General, and Raymond P. Underwood, Beverly B. Hall, and Thomas H. Denney, Assistant Attorneys General. Slade Gorton, Attorney General, argued the cause for defendant State of Washington. With him on the brief was Edward B. Mackie, Deputy Attorney General.
Briefs of amici curiae were filed by Solicitor General Bork for the United States; by Wendell Wyatt for the Columbia River Fishermens Protective Union; and by Robert E. Smylie for the Izaah Walton League of America, Inc., et al.
Per Curiam.
The Court has considered the written submissions of the parties and heard oral argument by the Attorneys General of the States with respect to the motion of the State of Idaho for leave to file a bill of complaint. It having been concluded that the Court has original and exclusive jurisdiction of this case to- the extent that the complaint prays that the Court declare that the State of Idaho is entitled to an equitable portion of the upriver anadromous fishery of the Columbia River Basin and that the Court determine Idaho’s equitable portion based on the evidence and award costs and appropriate incidental relief, the motion for leave to file is hereby granted to that extent. The motion is in all other respects denied. This order is not a judgment that the bill of complaint, to the extent that permission to file is granted, states a claim upon which relief may be granted. This order also leaves open the question of the indispensability of the United States as a party for decision after evidence, in the event the United States does not enter its appearance in the case. The States of Oregon and Washington are directed to file answers to the bill of complaint or to otherwise plead within 60 days and process is ordered to issue accordingly.
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