Compiled legislative histories are existing collections of all the bills, reports, debates, etc. leading up to a particular act's passage. Using a compiled history saves time because documents have already been gathered. Some of the best sources of these histories are listed to the right.
Provides daily updated information¸ including full text of bills starting in 1989¸ public laws starting in 1988¸ committee reports starting in 1990¸ House and Senate documents starting in 1995¸ Congressional hearings starting in 1987-88¸ Congressional Record starting in 1985¸ Federal Register starting in 1980¸ National Journal starting in 1977 and other government information. Users can search an index of congressional publications from 1970 to the present¸ retrieve CIS Legislative Histories for public laws going back to 1970¸ find testimony from congressional hearings¸ track bills as they move through the House and Senate¸ search the Congressional Record and Federal Register¸ locate information about members and committees¸ and search the National Journal.
Westlaw is a legal database restricted to law faculty, staff and students.
Lexis Advance is a legal database restricted to law faculty, staff and students.
Sources of Compiled Legislative Histories by 
Federal Legislative Histories by United States code congressional and administrative news