Cite as: 521 U. S. 898 (1997)
Thomas, J., concurring
Maryland, 4 Wheat. 316, 405 (1819) ("This government is acknowledged by all to be one of enumerated powers"). "[T]hat those limits may not be mistaken, or forgotten, the constitution is written." Marbury v. Madison, 1 Cranch 137, 176 (1803). Accordingly, the Federal Government may act only where the Constitution authorizes it to do so. Cf. New York v. United States, 505 U. S. 144 (1992).
In my "revisionist" view, see post, at 941 (Stevens, J., dissenting), the Federal Government's authority under the Commerce Clause, which merely allocates to Congress the power "to regulate Commerce . . . among the several States," does not extend to the regulation of wholly intrastate, point-of-sale transactions. See United States v. Lopez, 514 U. S. 549, 584 (1995) (concurring opinion). Absent the underlying authority to regulate the intrastate transfer of firearms, Congress surely lacks the corollary power to impress state law enforcement officers into administering and enforcing such regulations. Although this Court has long interpreted the Constitution as ceding Congress extensive authority to regulate commerce (interstate or otherwise), I continue to believe that we must "temper our Commerce Clause jurisprudence" and return to an interpretation better rooted in the Clause's original understanding. Id., at 601 (concurring opinion); see also Camps Newfound/Owatonna, Inc. v. Town of Harrison, 520 U. S. 564, 620 (1997) (Thomas, J., dissenting).
Even if we construe Congress' authority to regulate interstate commerce to encompass those intrastate transactions that "substantially affect" interstate commerce, I question whether Congress can regulate the particular transactions at issue here. The Constitution, in addition to delegating certain enumerated powers to Congress, places whole areas outside the reach of Congress' regulatory authority. The First Amendment, for example, is fittingly celebrated for preventing Congress from "prohibiting the free exercise" of religion or "abridging the freedom of speech." The Second
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