A listing of all Operational and Support Components with websites or webpages on DHS.gov that currently make up the Department of Homeland Security.
U.S. Citizenship and Immigration Services (USCIS) administers the nation’s lawful immigration system, safeguarding its integrity and promise by efficiently and fairly adjudicating requests for immigration benefits while protecting Americans, securing the homeland, and honoring our values.
The United States Coast Guard is one of the five armed forces of the United States and the only military organization within the Department of Homeland Security. The Coast Guard protects the maritime economy and the environment, defends our maritime borders, and saves those in peril.
United States Customs and Border Protection (CBP) is one of the Department of Homeland Security’s largest and most complex components, with a priority mission of keeping terrorists and their weapons out of the U.S. It also has a responsibility for securing and facilitating trade and travel while enforcing hundreds of U.S. regulations, including immigration and drug laws.
The Cybersecurity and Infrastructure Security Agency (CISA) leads the national effort to defend critical infrastructure against the threats of today, while working with partners across all levels of government and in the private sector to secure against the evolving risks of tomorrow.
The Federal Emergency Management Agency (FEMA) supports our citizens and first responders to ensure that as a nation we work together to build, sustain, and improve our capability to prepare for, protect against, respond to, recover from, and mitigate all hazards.
The Federal Law Enforcement Training Center provides career-long training to law enforcement professionals to help them fulfill their responsibilities safely and proficiently.
United States Immigration and Customs Enforcement (ICE) promotes homeland security and public safety through the criminal and civil enforcement of federal laws governing border control, customs, trade, and immigration.
The United States Secret Service (USSS) safeguards the nation's financial infrastructure and payment systems to preserve the integrity of the economy, and protects national leaders, visiting heads of state and government, designated sites, and National Special Security Events.
The Transportation Security Administration (TSA) protects the nation's transportation systems to ensure freedom of movement for people and commerce.
The Management Directorate is responsible for budget, appropriations, expenditure of funds, accounting and finance; procurement; human resources and personnel; information technology systems; facilities, property, equipment, and other material resources; and identification and tracking of performance measurements relating to the responsibilities of the Department.
The Science and Technology Directorate is the primary research and development arm of the Department. It provides federal, state and local officials with the technology and capabilities to protect the homeland.
The mission of the Countering Weapons of Mass Destruction (CWMD) Office is to counter attempts by terrorists or other threat actors to carry out an attack against the United States or its interests using a weapon of mass destruction.
The Office of Intelligence and Analysis equips the Homeland Security Enterprise with the timely intelligence and information it needs to keep the homeland safe, secure, and resilient.
The Office of Operations Coordination provides information daily to the Secretary of Homeland Security, senior leaders, and the homeland security enterprise to enable decision-making; oversees the National Operations Center; and leads the Department’s Continuity of Operations and Government Programs to enable continuation of primary mission essential functions in the event of a degraded or crisis operating environment.