The United States Secretary of the Interior is the head of the United States Department of the Interior. The Department of the Interior oversees such agencies as the Bureau of Indian Affairs, the United States Geological Survey, and the National Park Service. The Secretary also serves on and appoints the private citizens on the National Park Foundation board. The Secretary is a member of the President's Cabinet. The Secretary typically comes from a western state; only one of the last 16 Secretaries is not identified with a state lying west of the Mississippi River. The Secretary of the Interior is eighth in the United States presidential line of succession.