For nearly a century thereafter, the Court’s Commerce Clause decisions dealt but rarely with the extent of Congress’ power, and almost entirely with the Commerce Clause as a limit on state legislation that discriminated against interstate commerce. See, e.g., Veazie v. Moor, 14 How. 568, 573-575 (1853) (upholding a state-created steamboat monopoly because it involved regulation of wholly internal commerce); Kidd v. Pearson, 128 U.S. 1, 17, 20-22 (1888) (upholding a state prohibition on the manufacture of intoxicating liquor because the commerce power “does not comprehend the purely domestic commerce of a State which is carried on between man and man within a State or between different parts of the same State”); see also L. Tribe, American Constitutional Law 306 (2d ed. 1988). Under this line of precedent, the Court held that certain categories of activity such as “production,” “manufacturing,” and “mining” were within the province of state governments, and thus were beyond the power of Congress under the Commerce Clause. See Wickard v. Filburn, 317 U.S. 111, 121 (1942) (describing development of Commerce Clause jurisprudence).
In 1887, Congress enacted the Interstate Commerce Act, 24 Stat. 379, and in 1890, Congress enacted the Sherman Antitrust Act, 26 Stat. 209, as amended, 15 U.S.C. § 1 et seq. These laws ushered in a new era of federal regulation under the commerce power. When cases involving these laws first reached this Court, we imported from our negative Commerce Clause cases the approach that Congress could not regulate activities such as “production,” “manufacturing,” and “mining.” See, e.g., United States v. E.C. Knight Co., 156 U.S. 1, 12 (1895) (“Commerce succeeds to manufacture, and is not part of it”); Carter v. Carter Coal Co., 298 U.S. 238, 304 (1936) (“Mining brings the subject matter of commerce into existence. Commerce disposes of it”). Simultaneously, however, the Court held that, where the interstate and intrastate aspects of commerce were so mingled together that full regulation of interstate commerce required incidental regulation of intrastate commerce, the Commerce Clause authorized such regulation. See, e.g., Houston, E. & W.T.R. Co. v. United States, 234 U.S. 342 (1914) (Shreveport Rate Cases).