"GovTrack.us began in 2004 as a project to use technology to make the U.S. Congress more open and accessible. Today we’re the leading non-governmental source of legislative information and statistics."
This legislative Information resource is presented by the Library of Congress (LOC) using data from the Office of the Clerk of the U.S. House of Representatives, the Office of the Secretary of the Senate, the Government Publishing Office, Congressional Budget Office, and the LOC's Congressional Research Service. Congress.gov supersedes the THOMAS system (http://thomas.loc.gov/) which was retired on July 5, 2016.