Environmental Protection Act of 1971. hearings before the Subcommittee on the Environment of the Committee on Commerce, United States Senate, Ninety-second Congress, first session on S. 1032, to promote and protect the free flow of interstate commerce without unreasonable damage to the environment; to assure that activities which affect interstate commerce will not unreasonably injure environmental rights; to provide a right of action for relief for protection of the environment from unreasonable infringement by activities which affect interstate commerce and to establish the right of all citizens to the protection, preservation, and enhancement of the environment. Part 1, April 15 and 16, 1971 :