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      Site LinksWho 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.

Learn more about the creation of the Department of Homeland Security
      
      Chronology of Events
      Lead up to 9/11
			TodayThe 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 responsibilitiesThe 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 programsThe Federal Protective Service
			U.S. Immigration and Customs Enforcement until 2009); currently resides within the National Protection and Programs DirectorateThe Transportation Security Administration (Transportation)
			Transportation Security AdministrationFederal Law Enforcement Training Center (Treasury)
			Federal Law Enforcement Training CenterAnimal and Plant Health Inspection Service (part)(Agriculture)
			U.S. Customs and Border Protection - agricultural imports and entry inspectionsOffice for Domestic Preparedness (Justice)
			Responsibilities distributed within FEMAThe Federal Emergency Management Agency (FEMA)
			Federal Emergency Management AgencyStrategic National Stockpile and the National Disaster Medical System (HHS)
			Returned to Health and Human Services, July, 2004Nuclear Incident Response Team (Energy)
			Responsibilities distributed within FEMADomestic Emergency Support Teams (Justice)
			Responsibilities distributed within FEMANational Domestic Preparedness Office (FBI)
			Responsibilities distributed within FEMACBRN Countermeasures Programs (Energy)
			Science & Technology DirectorateEnvironmental Measurements Laboratory (Energy)
			Science & Technology DirectorateNational BW Defense Analysis Center (Defense)
			Science & Technology DirectoratePlum Island Animal Disease Center (Agriculture)
			Science & Technology DirectorateFederal Computer Incident Response Center (GSA)
			US-CERT, Office of Cybersecurity and Communications in the National Protection and Programs DirectorateNational Communications System (Defense)
			Office of Cybersecurity and Communications in the National Protection and Programs DirectorateNational Infrastructure Protection Center (FBI)
			Spread throughout the Department, including Office of Homeland Security Situational Awareness and Office of Infrastructure ProtectionEnergy Security and Assurance Program (Energy)
			Integrated into the Office of Infrastructure ProtectionU.S. Coast Guard
			U.S. Coast GuardU.S. Secret Service
			U.S. Secret ServiceThe 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 ProtectionSee the Organizational Chart for the Department of Homeland Security.
  
    
    TopicsHomeland Security EnterpriseKeywordsDepartment of Homeland Security (DHS)

    Last Updated: 02/27/2023
  
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