United States v. Lopez, 514 U.S. 549, 11 (1995)

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Cite as: 514 U. S. 549 (1995)

Opinion of the Court

tivities having a substantial relation to interstate commerce, Jones & Laughlin Steel, 301 U. S., at 37, i. e., those activities that substantially affect interstate commerce, Wirtz, supra, at 196, n. 27.

Within this final category, admittedly, our case law has not been clear whether an activity must "affect" or "substantially affect" interstate commerce in order to be within Congress' power to regulate it under the Commerce Clause. Compare Preseault v. ICC, 494 U. S. 1, 17 (1990), with Wirtz, supra, at 196, n. 27 (the Court has never declared that "Congress may use a relatively trivial impact on commerce as an excuse for broad general regulation of state or private activities"). We conclude, consistent with the great weight of our case law, that the proper test requires an analysis of whether the regulated activity "substantially affects" interstate commerce.

We now turn to consider the power of Congress, in the light of this framework, to enact 922(q). The first two categories of authority may be quickly disposed of: 922(q) is not a regulation of the use of the channels of interstate commerce, nor is it an attempt to prohibit the interstate transportation of a commodity through the channels of commerce; nor can 922(q) be justified as a regulation by which Congress has sought to protect an instrumentality of interstate commerce or a thing in interstate commerce. Thus, if 922(q) is to be sustained, it must be under the third category as a regulation of an activity that substantially affects interstate commerce.

First, we have upheld a wide variety of congressional Acts regulating intrastate economic activity where we have concluded that the activity substantially affected interstate commerce. Examples include the regulation of intrastate coal mining; Hodel, supra, intrastate extortionate credit transactions, Perez, supra, restaurants utilizing substantial interstate supplies, McClung, supra, inns and hotels catering to interstate guests, Heart of Atlanta Motel, supra, and pro-

559

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