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.
The official record of the proceedings and debates of the United States Congress. It is published daily when Congress is in session. This site contains Congressional record volumes from 140 (1994) to the present. At the back of each daily issue is the "Daily Digest," which summarizes the day's floor and committee activities.
Empowered with the sovereign authority of the people by the framers and the consent of the legislatures of the states, the Constitution is the source of all government powers, and also provides important limitations on the government that protect the fundamental rights of United States citizens.