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U.S. Department of Homeland Security (DHS) – Directory

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U.S. Department of Homeland Security (DHS)

Work 650 Massachusetts Avenue NW Washington DC 20001 Work Phone: 202-282-8000 Website: DHS


The U.S. Department of Homeland Security (DHS) is charged with the primary responsibilities of protecting the United States and its territories from and responding to terrorist attacks, man-made accidents, and natural disasters.

Major agencies and components organized under DHS include:

  • U.S. Customs and Border Protection (CBP)
  • Federal Emergency Management Agency (FEMA)
  • Transportation Security Administration (TSA)
  • DHS Science and Technology Directorate
  • Domestic Nuclear Detection Office
  • DHS National Protection and Programs Directorate
  • U.S. Citizen and Immigration Service (USCIS)
  • U.S. Coast Guard (USCG)
  • Federal Law Enforcement Training Center (FLETC)
  • Immigration and Customs Enforcement (ICE)
  • U.S.Secret Service (USSS)

The Department of Homeland Security was formed in the wake of the terrorist attacks of September 11, 2001, as part of a determined national effort to safeguard the United States against terrorism. The Department became the third-largest federal department, bringing together 22 different federal agencies, each with a role in this effort.


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