The official site for finding all current bills including a summary and status report for each one updated daily. Also includes laws, committee reports, daily schedules and proceedings of Congress with links to live videos of current House and Senate proceedings, the United States Code, treaties, historical documents, and how to contact your legislators.
Bill records are available on Congress.gov from 1973 (93rd Congress) to the present. The full texts of bills are available from 1993 (103rd Congress), and the full text of laws from 1995 (104th Congress). Amendment records are available from 1981 (97th Congress), and full text of amendments is available from 1995 (104th Congress) to the present.