Catalog of U.S. Government Publications from the U.S. Government Publishing Office
Compilation of Presidential Documents (1993-present)
Congress.gov is a search tool for federal legislation from 1973-present
Data.gov provides data, tools, and resources to conduct research, develop web and mobile applications, design data visualizations, and more
Federal Government and Statistical Agencies lists a number of federal agencies which publish statistics
GovInfo: U.S. Federal Government Information
MetaLib is "a service of the Catalog of U.S. Government Publications (CGP). MetaLib ... searches multiple U.S. Federal government databases, retrieving reports, articles, and citations while providing direct links to selected resources available online."
Supreme Court of the United States: Opinions, press releases, journals, transcripts, and more
USA.gov is "your online guide to government information and services"
EveryCRSReport.com publishes "reports by Congress's think tank, the Congressional Research Service, which provides insight and non-partisan analysis of issues of public debate. These reports are already available to the well-connected -- we're making them available to everyone for free."
U.S. Government Accountability Office - Browse by topic
"The U.S. Government Accountability Office (GAO) is an independent, nonpartisan agency that works for Congress. ... (Their mission) is to support the Congress in meeting its constitutional responsibilities and to help improve the performance and ensure the accountability of the federal government for the benefit of the American people. (They) provide Congress with timely information that is objective, fact-based, nonpartisan, nonideological, fair, and balanced."
