The U.S. Supreme Court helped support laissez-faire capitalism soon after the Civil War by Multiple Choice strengthening the national government's regulatory powers by giving a broad interpretation of its commerce power. interpreting the Constitution in ways that restricted the government's attempts to regulate business activity. forcing the national government to place a ban on the importation and exportation of goods to foreign countries. using loopholes in the Constitution to provide more categorical grants to the states. affirming that the activities of corporations were to be strictly monitored and regulated by the states.