 In 1869, the Supreme Court of the United States held, in "Paul v. Virginia" (1869), that United States Congress did not have the authority to regulate insurance under its power to regulate commerce.In the 1930s and 1940s, a number of U.S. Supreme Court decisions broadened the interpretation of the Commerce Clause in various ways, so that federal jurisdiction over interstate commerce could be seen as extending to insurance.In March 1945, the United States Congress expressly reaffirmed its support for state-based insurance regulation by passing the McCarran–Ferguson Act which held that no law that Congress passed should be construed to invalidate, impair or supersede any law enacted by a state regarding insurance.