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:
INTERNATIONAL LONGSHOREMEN’S AND WAREHOUSEMEN’S UNION, LOCAL 37, et al. v. BOYD, DISTRICT DIRECTOR, IMMIGRATION AND NATURALIZATION SERVICE.
No. 195.
Argued January 6, 1954.
Decided March 8, 1954.
A. L. Wirin argued the cause for appellants. With him on the brief was Norman Leonard.
Charles Gordon argued the cause for appellee. With him on the brief were Acting Solicitor General Stern, Assistant Attorney General Olney, John F. Davis, Beatrice Rosenberg and L. Paul Winings.
Mr. Justice Frankfurter
delivered the opinion of the Court.
This is an action by Local 37 of the International Longshoremen’s and Warehousemen’s Union and several of its alien members to enjoin the District Director of Immigration and Naturalization at Seattle from so construing § 212 (d) (7) of the Immigration and Nationality Act of 1952 as to treat aliens domiciled in the continental United States returning from temporary work in Alaska as if they were aliens entering the United States for the first time. Declaratory relief to the same effect is also sought. Since petitioners asserted in the alternative that such a construction of the challenged statute would be unconstitutional, a three-judge district court was convened. The case came before it on stipulated facts and issues of law, from which it appeared that the union has over three thousand members who work every summer in the herring and salmon canneries of Alaska, that some of these are aliens, and that if alien workers going to Alaska for the 1953 canning season were excluded on their return, their “contract and property rights [would] be jeopardized and forfeited.” The District Court entertained the suit but dismissed it on the merits. 111 F. Supp. 802. In our order of October 12, 1953, we postponed the question of jurisdiction to the hearing on the merits. 346 U. S. 804.
On this appeal, appellee contends that the District Court should not have reached the statutory and constitutional questions — that it should have dismissed the suit for want of a “case or controversy,” for lack of standing on the union’s part to bring this action, because the Attorney General was an indispensable party, and because habeas corpus is the exclusive method for judicial inquiry in deportation cases. Since the first objection is conclusive, there is an end of the matter.
Appellants in effect asked the District Court to rule that a statute the sanctions of which had not been set in motion against individuals on whose behalf relief was sought, because an occasion for doing so had not arisen, would not be applied to them if in the future such a contingency should arise. That is not a lawsuit to enforce a right; it is an endeavor to obtain a court’s assurance that a statute does not govern hypothetical situations that may or may not make the challenged statute applicable. Determination of the scope and constitutionality of legislation in advance of its immediate adverse effect in the context of a concrete case involves too remote and abstract an inquiry for the proper exercise of the judicial function. United Public Workers v. Mitchell, 330 U. S. 75; see Muskrat v. United States, 219 U. S. 346, and Alabama State Federation of Labor v. McAdory, 325 U. S. 450. Since we do not have on the record before us a controversy appropriate for adjudication, the judgment of the District Court must be vacated, with directions to dismiss the complaint.
It is so ordered.
This section states that the exclusionary provisions of § 212 (a) shall, with exceptions not here relevant, “be applicable to any alien who shall leave Hawaii, Alaska, Guam, Puerto Rico, or the Virgin Islands of the United States, and who seeks to enter the continental United States . . . 8 U. S. C. § 1182 (d) (7).

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: 0