The U.S. Department of Homeland Security (DHS) is a cabinet-level federal executive department responsible for safeguarding the United States from domestic and transnational threats. Its mission includes preventing terrorism, securing borders and immigration systems, protecting cyberspace and critical infrastructure, responding to disasters, and coordinating federal preparedness and recovery efforts.
Border security and immigration enforcement, counterterrorism and law enforcement coordination, cybersecurity and critical infrastructure protection, transportation and aviation security, disaster preparedness and emergency management, resilience and supply-chain security
Primarily funded through annual federal appropriations enacted by the U.S. Congress, supplemented by fee-based revenues and interagency reimbursements
Federal Emergency Management Agency (FEMA), Transportation Security Administration (TSA), U.S. Customs and Border Protection (CBP), U.S. Immigration and Customs Enforcement (ICE), Cybersecurity and Infrastructure Security Agency (CISA), U.S. Secret Service, U.S. Coast Guard, Science and Technology Directorate
Federal executive department
