Commerce Clause

The Commerce Clause, found in Article I, Section 8, Clause 3 of the Constitution, grants Congress the power to regulate commerce with foreign nations, among the several states, and with Indian tribes. It is one of the most frequently litigated provisions in constitutional law and serves as the foundation for much of the federal regulatory state.

Since Gibbons v. Ogden (1824), the Supreme Court has interpreted the Commerce Clause broadly, defining commerce as encompassing not just buying and selling but all forms of commercial intercourse. Under the modern framework established in United States v. Lopez (1995), Congress may regulate three categories of activity: (1) the channels of interstate commerce, (2) the instrumentalities of interstate commerce or persons and things in interstate commerce, and (3) activities that have a substantial effect on interstate commerce. For the third category, the Court will consider whether the regulated activity is economic in nature, whether there is a jurisdictional element, and whether the statute contains congressional findings.

The Commerce Clause also has a dormant or negative component, which prohibits states from unduly burdening interstate commerce even where Congress has not acted. The Dormant Commerce Clause doctrine prevents economic protectionism and balances state regulatory interests against the national interest in free trade. The Commerce Clause remains central to debates about the scope of federal power, as demonstrated in cases like NFIB v. Sebelius (2012), where the Court held that Congress could not compel individuals to engage in commerce.