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:
CONNOR et al. v. COLEMAN, JUDGE, UNITED STATES COURT OF APPEALS, et al.
No. 78-1013.
Decided March 26, 1979
Per Curiam.
Petitioners are plaintiffs in a suit seeking reapportionment of the Mississippi Legislature. In the most recent of the Court’s decisions in this extended litigation, Connor v. Finch, 431 U. S. 407, 426 (1977), it reversed the judgment of the District Court and directed that court to draw a new reapportionment plan for the 1979 elections “with a compelling awareness of the need for its expeditious accomplishment.”
On remand, and after further proceedings, the parties developed a settlement plan. Negotiations broke down, however, over the wording of a consent decree. In the meantime, the State had adopted a new statutory reapportionment plan fashioned by the legislature. Because the Attorney General of the United States, acting pursuant to the Voting Rights Act of 1965, 42 U. S. C. § 1973c, refused to approve the legislature’s plan, the State brought suit under the Act in the United States District Court for the District of Columbia, seeking a declaration that the plan does not have a discriminatory purpose or effect.
Acting on the state defendants’ motion, the District Court in this case determined to stay all proceedings until judgment was entered in the District of Columbia litigation. If upheld, the statutory plan would supersede any court-ordered one. See Wise v. Lipscomb, 437 U. S. 535, 539-542 (1978). Petitioners then submitted this motion for leave to file a petition for a writ of mandamus to require the District Court to adopt a plan. Petitioners contend that some reapportionment scheme must be in effect by June 7, the filing deadline for the 1979 elections. Petitioners argue that the legislature’s plan may not be in effect by that date, and that, unless the court files its plan now, time limitations effectively will preclude them from obtaining review of that order in this Court. It is argued in response that immediate filing would be unduly disruptive if the filed plan were supplanted before June 7. The District Court has indicated, however, that, absent the conclusion of the District of Columbia suit, it will order a plan into effect on May 7.
The only issue here, therefore, is whether this Court should require the District Court to file its plan now rather than on May 7; we do not question the good faith of the District Court. We believe, however, that the better course is to file its plan now. In the unlikely event that a legislative plan should supersede the court plan before May 7, potential candidates would have more than a month to reassess their prospects. If, on the other hand, the legislative plan does not go into effect and the court plan is filed only on May 7, this Court will be faced with requests for emergency review that, if granted, could force changes only days before the June 7 deadline.
Leave to file the petition is therefore granted. The District Court is instructed, forthwith and without further delay, to adopt a final plan for the reapportionment of the Mississippi Legislature. Our consideration of the petition for a writ of mandamus is continued for 30 days. See Connor v. Coleman, 425 U. S. 675, 679 (1976).
It is so ordered.
Mr. Justice Powell took no part in the decision of this motion.

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