298 U.S. 238 (1936)
Carter v. Carter Coal Co.
Whether Congress, under the Commerce Clause, can regulate employment relations and production practices within the coal industry.
The Commerce Clause allows Congress to regulate interstate commerce but does not extend to the regulation of production activities or local employment relations, which are intrastate matters.
The Supreme Court held that the Bituminous Coal Conservation Act was unconstitutional because it attempted to regulate local labor relations, which were outside the scope of Congress's power under the Commerce Clause.
Carter v. Carter Coal Co. underscores the limitations of the Commerce Clause in regulating intrastate activities, reinforcing the principle of federalism by preserving states' rights to regulate local matters. For law students, it highlights the judiciary's role in maintaining the constitutional balance of power and provides a foundation for analyzing later cases that expand or contract federal regulatory authority.