Congress.gov is the official website for U.S. federal legislative information. The site provides access to accurate, timely, and complete legislative information for Members of Congress, legislative agencies, and the public. It is presented by the Library of Congress (LOC) using data from the Office of the Clerk of the U.S. House of Representatives, the Office of the Secretary of the Senate, the Government Printing Office, Congressional Budget Office, and the LOC's Congressional Research Service.
This new site is replacing THOMAS and will eventually incorporate all that content. It is still in beta testing.
Both chambers of Congress maintain informative websites. Even though there is some overlap with the Congress.gov site and FDsys.gov, the individual websites include committee work, legislation, histories, art work and discussion of the legislative process.
The Parliamentarian of the House, in consulatation with the Parliamentarian of the Senate, publishes a document called How Our Laws are Made which is updated as needed.
The Reference tab provides links to a Senate organization description, bibliographies, a glossary and an historical list of Cabinet and Supreme Court nominees - even those rejected.
The Congressional Budget Office's "mandate is to provide the Congress with: Objective, nonpartisan and timely analyses to aid in economic and budgetary decisions on the wide array of programs covered by the federal budget and the information and estimates required for the Congressional budget process.
The U.S. Government Accountability Office (GAO) is known as "the investigative arm of Congress" and "the congressional watchdog." GAO supports the Congress in meeting its constitutional responsibilities and helps improve the performance and accountability of the federal government for the benefit of the American people
This unit of the Library of Congress provides "Congress with the vital, analytical support it needs to address the most complex public policy issues facing the nation. Its work incorporates program and legislative expertise, quantitative methodologies, and legal and economic analysis." However, there is no requirement that this product be made publicly available to the American public. There are a multitude of other organizations that do provide access to some of the CRS reports
Intellectual property, cyberlaw and electronic commerce CRS reports
CRS reports in Homeland Security/Terrorism and Health Law and Policy