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  1. Home
  2. About DHS
  3. History
  4. Who Joined DHS

Who Joined DHS

Learn more about how The Department of Homeland Security (DHS) was created through the combination of all or part of 22 different federal departments and agencies into a unified, integrated Department and how DHS has become a more effective Department.

Lead up to 9/11 Today
The U.S. Customs Service (Treasury) U.S. Customs and Border Protection - inspection, border and ports of entry responsibilities

U.S. Immigration and Customs Enforcement - customs law enforcement responsibilities

The Immigration and Naturalization Service (Justice) U.S. Customs and Border Protection - inspection functions and the U.S. Border Patrol

U.S. Immigration and Customs Enforcement - immigration law enforcement: detention and removal, intelligence, and investigations

U.S. Citizenship and Immigration Services - adjudications and benefits programs

The Federal Protective Service U.S. Immigration and Customs Enforcement until 2009); currently resides within the National Protection and Programs Directorate
The Transportation Security Administration (Transportation) Transportation Security Administration
Federal Law Enforcement Training Center (Treasury) Federal Law Enforcement Training Center
Animal and Plant Health Inspection Service (part)(Agriculture) U.S. Customs and Border Protection - agricultural imports and entry inspections
Office for Domestic Preparedness (Justice) Responsibilities distributed within FEMA
The Federal Emergency Management Agency (FEMA) Federal Emergency Management Agency
Strategic National Stockpile and the National Disaster Medical System (HHS) Returned to Health and Human Services, July, 2004
Nuclear Incident Response Team (Energy)

Responsibilities distributed within FEMA

Domestic Emergency Support Teams (Justice) Responsibilities distributed within FEMA
National Domestic Preparedness Office (FBI)

Responsibilities distributed within FEMA

CBRN Countermeasures Programs (Energy) Science & Technology Directorate
Environmental Measurements Laboratory (Energy) Science & Technology Directorate
National BW Defense Analysis Center (Defense) Science & Technology Directorate
Plum Island Animal Disease Center (Agriculture) Science & Technology Directorate
Federal Computer Incident Response Center (GSA) US-CERT, Office of Cybersecurity and Communications in the National Protection and Programs Directorate
National Communications System (Defense) Office of Cybersecurity and Communications in the National Protection and Programs Directorate
National Infrastructure Protection Center (FBI) Dispersed throughout the Department, including Office of Operations Coordination and Office of Infrastructure Protection
Energy Security and Assurance Program (Energy)

Integrated into the Office of Infrastructure Protection

U.S. Coast Guard U.S. Coast Guard
U.S. Secret Service U.S. Secret Service

The following three directorates, created by the Homeland Security Act of 2002 were abolished by a July 2005 reorganization and their responsibilities transferred to other departmental components:

  • Border and Transportation Security
  • Emergency Preparedness and Response
  • Information Analysis and Infrastructure Protection

See the Organizational Chart for the Department of Homeland Security.

 

Last Updated: 05/25/2022
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