The bills proposed and debated (as well as ultimately passed into law) in Congress (legislative branch) are first listed in the Congressional Record. Those which become laws – Public Laws and Private Laws – are then listed, chronologically, in the Statutes at Large. And they are later codified, by broad subject categories (called Titles), into the United States Code (U.S. Code), which is published every 6 years.
At gpoaccess.gov, the 2006, 2000, and 1994 editions of the U.S. Code can be browsed by Title (there are 50 Titles) here or searched here.
The Statutes at Large for the 108th and 109th Congresses can be searched here and here.
The Congressional Record can be searched here.