Department of the Interior federal agency responsible for the management and conservation of most federal lands and natural resources

US Senate upper house of the United States Congress

US House of Representatives lower house of the United States Congress

United States Department of Energy U.S. government department regulating energy production and nuclear material handling

US Department of State Federal executive department responsible for carrying out U.S. foreign policy and international relations

Environmental Protection Agency US government agency for environmental protection created in 1970 by Pres. Nixon

Office of Management and Budget White House budget office

United States Department of Transportation

Nuclear Regulatory Commission

Internal Revenue Service U.S. tax agency