United States of America (3:5:1 Federal Departments)

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States
The Courts
Embassies & Consulates
Federal Executive Departments by Wikipedia
Official US Executive Branch Web Sites by Library of Congress
A-Z Index: Departments and Agencies by USA.gov

Agriculture
USDA Department of Agriculture
Agencies and Staff Offices (USDA)
Rural Development (USDA)

Commerce
US Department of Commerce
Census Bureau
STAT-USA
US Government's Patent and Trademark Office

Defense
Defense Link Department of Defense
Americas's Army
Air Force Link The official site of the US Air Force
U.S. Navy
U.S. Marine Corps
The National Guard
Defense Technical Infomation Center (DTIC)
The Joint Chiefs of Staff

Education
Department of Education

Energy
Department of Energy (DOE)
Office of Energy Research (OER)

Health and Human Services
Department of Health and Human Services
Food and Drug Administration (FDA)
National Institutes of Health (NIH)

Homeland Security
Department of Homeland Security

Housing and Urban Development
Department of Housing and Urban Development
Federal Housing Administration (FHA)

Interior
Department of the Interior
Bureaus and Offices
Bureau of Indian Affairs

Justice
Department of Justice
Department of Justice Organizations Alphabetic index
Federal Bureau of Investigation (FBI) Department of Justice
Drug Enforcement Administration (DEA) Department of Justice

Labor
Department of Labor

State
Department of State The Secretary of State
International Information Programs
U.S. Agency for International Development (USAID)
Bureau of Public Affairs
U.S. Missions Online
Federal Depository Library Program Electronic Research Collection

Transportation
Department of Transportation
The Bureau of Transportation Statistics
Federal Aviation Administration (FAA)
Federal Highway Administration (FHWA)
Federal Railroad Administration (FRA)
Federal Transit Administration (FTA)
Maritime Administration (MARAD)
National Highway Traffic Safety Administration (NHTSA)

Treasury
Department of Treasury
Treasury Bureaus
Alcohol and Tobacco Tax and Trade Bureau (TTB)
Bureau of Public Debt (BPD)
Secret Service (USSS)

Veterans
Department of Veterans Affairs


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