Federal Agencies

Focusing on land operations, the U.S. Army organizes, trains, and equips active duty and Reserve forces to preserve the peace, security, and defense of the United States.

Formed in 2002 from the combination of 22 departments and agencies, the Department of Homeland Security works to improve the security of the United States. The Department's work includes customs, border, and immigration enforcement; emergency response to natural and manmade disasters; antiterrorism work; and cybersecurity.

The Department of State advises the President and leads the nation in foreign policy issues. The State Department negotiates treaties and agreements with foreign entities, and represents the United States at the United Nations.

The Internal Revenue Service (IRS) administers and enforces U.S. federal tax laws.

FEMA supports citizens and emergency personnel to build, sustain, and improve the nations capability to prepare for, protect against, respond to, recover from, and mitigate all hazards.

A part of the Navy, the Marine Corps is the only branch of the armed services specifically tasked by Congress to be able to fight on land, at sea, or in the air.

The Defense Advanced Research Projects Agency serves as the central research and development organization of the Department of Defense.