LEGISLATIVE BRANCH:

U.S. Senate
U.S. House of Representatives
House Republican Policy Committee
House Republican Leader
GOP.gov
Library of Congress
Thomas.gov (full searchable text bills and congressional records)
Thomas.gov Historical Documents Page
How Our Laws Are Made

JUDICIAL BRANCH:

U.S. Courts
Supreme Court
United States Courts of Appeals
United States District Courts
Court of Appeals for Veterans' Claims
Judicial Fellows Program
U.S. Court of Appeals for the Armed Forces
U.S. Court of Federal Claims
U.S. Federal Claims Court - ECF
U.S. Sentencing Commission
Central Violations Bureau
Federal Judicial Center
Judicial Panel on Multi-District Litigation
U.S. Court of International Trade
U.S. Party/Case Index - PACER
U.S. Tax Court
Federal Judges Association
Federal Court Clerks Association
National Conference of Bankruptcy Judges
Federal Magistrate Judges Association
International Association for Court Administration

Executive Branch:

The White House
Department of Agriculture (USDA)
Department of Commerce (DOC)
Department of Defense (DOD)
Department of Education
Department of Energy
Department of Health and Human Services
Department of Homeland Security
Department of Housing and Urban Development
Department of Labor
Department of Interior
Department of Justice
State Department
Department of Transportation
Department of the Treasury
Department of Veterans Affairs
Environmental Protection Agency (EPA)
Office of Budget and Management (OMB)
Office of National Drug Control Policy (ONDCP)
United States Trade Representative (USTR)

FEDERAL AGENCIES & COMMISSIONS:

Advisory Council on Historic Preservation
Arms Control and Disarmanent Agency
Commodity Futures Trading Commission
Consumer Product Safety Commission
Corporation for National Service
Environmental Protection Agency (EPA)
Farm Credit Administration
Federal Communications Commission (FCC)
Federal Deposit Insurance Corporation (FDIC)
Federal Election Commission
Federal Emergency Management Agency (FEMA)
Federal Housing Finance Board
Federal Trade Commission (FTC)
General Services Administration
Institute of Museum Services
International Trade Commission
National Aeronautics & Space Administration (NASA)
National Archives and Records Administration
National Commission on Libraries and Information Science
National Endowment for the Arts
National Endowment for Humanities
National Labor Relations Board
National Science Foundation (NSF)
National Security Agency (NSA)
Nuclear Regulatory Commission
Office of Personal Management
Peace Corps
Securities Exchange Commission
Selective Service System
Small Business Administration (SBA)
Smithsonian Institution
Social Security Administration
USAID
U.S. Patent and Trade Office
U.S. Postal Service