Congressional publications and legislative histories (1789-present), Congressional reports, documents, prints, bills and the Congressional Record (1988-present), bill tracking reports, public laws and the United States Code service, the Federal Register and the Code of Federal Regulations, biographical and financial information and voting records, schedules for committees and subcommittees, National Journal, links to Web sites with information about Congress and American politics. Covers 1970 to date.
Some full-text. 
