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:
HOWELL CHEVROLET CO. v. NATIONAL LABOR RELATIONS BOARD.
No. 34.
Argued November 12, 1953.
Decided December 14, 1953.
Erwin Lerten argued the cause for petitioner. With him on the brief was Frederick A. Potruch.
Marvin E. Frankel argued the cause for respondent. With him on the brief were Acting Solicitor General Stern, George J. Bott, David P. Findling and Dominick L. Manoli.
Opinion of the Court by
Mr. Justice Black,
announced by Mr. Justice Reed.
The petitioner Howell Chevrolet Company retails Chevrolet automobiles and parts in Glendale, California. After hearings, the National Labor Relations Board found Howell guilty of unfair labor practices in refusing to bargain with its employees and intimidating them in various ways in violation of the National Labor Relations Act as amended. An appropriate order was issued. 95 N. L. R. B. 410. The Court of Appeals for the Ninth Circuit enforced the Board’s order, 204 F. 2d 79, rejecting the contention that the Act could not be applied to Howell. On similar facts the Sixth Circuit held that the Labor Board had no jurisdiction over a local Ford automobile dealer. Labor Board v. Bill Daniels, Inc., 202 F. 2d 579. We granted certiorari to consider the single question presented by petitioner — whether the Act is applicable to retail automobile dealers like Howell. 345 U. S. 955.
Sections 10 (a) and 2 (7) of the Labor Act empower the Board to prevent “any person” from adversely “affecting commerce” by unfair labor practices “tending to lead to a labor dispute burdening or obstructing commerce or the free flow of commerce.” The Board found that Howell’s unfair labor practices tended to do this. Among others, the following facts underlie that finding:
Howell bought its new Chevrolets from a General Motors assembly plant located in California and its spare parts and accessories were delivered to it from General Motors warehouses in California. Forty-three percent of all this merchandise was manufactured in other states and shipped into California for assembly or distribution. During 1949 Howell’s purchases from General Motors exceeded $1,000,000.
Howell’s local retail establishment was closely supervised by General Motors. Sweeping control of the business was reserved by General Motors in a “Direct Dealer Selling Agreement.” Howell had to sign this agreement to get his “non-exclusive privilege of selling new Chevrolet motor vehicles and chassis” and “parts and accessories.” The agreement required Howell to make varied and detailed reports about his business affairs, to devote full time to Chevrolet sales, to keep his sales facilities at a location and conduct the business in a manner that satisfied General Motors, to permit General Motors to inspect Howell’s books, accounts, facilities, stocks and accessories and to keep such uniform accounting systems as General Motors might prescribe. Many other terms of the agency agreement also emphasized the interdependence of Howell’s local and General Motors’ national activities.
All this evidence caused the Board to conclude that Howell was “an integral part” of General Motors’ national system of distribution. Under these circumstances the Board was justified in finding that Howell’s repeated unfair labor practices tended to lead to disputes burdening or obstructing commerce among the states. It follows that the Board had jurisdiction to act under the facts it found.
Affirmed.
Mr. Justice Douglas dissents.
61 Stat. 136, 29 U. S. C. (Supp. V) § 151 et seq.

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: 3