USA.gov searches only federal, state, and local government websites for the public. Its search box works like other search engines you're used to, but USA.gov only returns results from government web pages, most ending in .gov or .mil. This helps you be sure you’re getting official information you can trust--and there’s no advertising.
Congress.gov is the official website for U.S. federal legislative information. The site provides access to accurate, timely, and complete legislative information for Members of Congress, legislative agencies, and the public. It 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.