U.S. Government

American Fact Finder- U.S. census data
Central Intelligence Agency (C.I.A.)- Information concerning national security intelligence.
Library of Congress (THOMAS) - Full text of all versions of House and Senate bills.  One may search by bill number or key words.  Also available are the full texts of the Congressional Record as well as House and Senate floor proceedings. 
U.S. Census Bureau- U.S. population information and a world population clock.
U.S. House of Representatives- Provides information about our current representatives and pending legislation. 
U.S. Senate- Locate your senator, obtain a list of senators, or research pending legislation.
U.S. Supreme Court- A thorough site examining the proceedings of our nation's highest court. 
Voting America- Provides an examination of presidential politics and a history of the electoral process. 
White House-  The official site of the President and Vice-President of the United States.