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:
McKNIGHT v. GENERAL MOTORS CORP.
No. 92-1113.
Decided May 23, 1994
Per Curiam.
After petitioner appealed the dismissal of his employment discrimination claim, respondent moved for dismissal of the appeal and for sanctions. Respondent argued that the appeal was frivolous in light of controlling decisions of the Court of Appeals for the Seventh Circuit holding that § 101 of the Civil Rights Act of 1991, 105 Stat. 1071, 42 U. S. C. § 1981 (1988 ed., Supp. IV), does not apply to cases arising before its enactment. See Luddington v. Indiana Bell Tel. Co., 966 F. 2d 225 (1992); Mozee v. American Commercial Marine Serv. Co., 963 F. 2d 929 (1992). In an order dated September 30, 1992, the Court of Appeals granted respondent’s motion, dismissed the appeal, and imposed a $500 sanction on petitioner’s attorney.
The Court of Appeals correctly rejected petitioner’s argument that § 101 applies retroactively. See Landgraf v. USI Film Products, ante, p. 244; Rivers v. Roadway Express; Inc., ante, p. 298. However, if the only basis for the order imposing sanctions on petitioner’s attorney was that his retroactivity argument was foreclosed by Circuit precedent, the order was not proper. As petitioner noted in his memorandum opposing dismissal and sanctions, this Court had not yet ruled on the application of § 101 to pending cases. Filing an appeal was the only way petitioner could preserve the issue pending a possible favorable decision by this Court. Although, as of September 30,1992, there was no circuit conflict on the retroactivity question, that question had divided the District Courts and its answer was not so clear as to make petitioner’s position frivolous. See Mozee, supra, at 940-941 (Cudahy, J., dissenting).
Accordingly, the petition for a writ of certiorari is granted, the order imposing sanctions 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
3