Our duties are wide-ranging and our goal is clear: a safer, more secure America, which is resilient against terrorism and other potential threats.
Missions include preventing terrorism and enhancing security; managing our borders; administering immigration laws; securing cyberspace; and ensuring disaster resilience.
The Department is focused on smart and effective enforcement of U.S. immigration laws while streamlining and facilitating the legal immigration process.
The Department of Homeland Security provides the coordinated, comprehensive federal response in the event of a terrorist attack, natural disaster or other large-scale emergency while working with federal, state, local, and private sector partners to ensure a swift and effective recovery effort.
Protecting the American people from terrorist threats is our founding principle and our hig
Department works with industry and state, local, tribal and territorial governments to secure critical infrastructure and information systems. Analyzes and reduces threats and distributes warnings.
The Department of Homeland Security secures the nation's air, land, and sea borders to prevent illegal activity while facilitating lawful travel and trade.
The Department of Homeland Security was formed after the terrorist attacks of September 11, 2001, as part of a national effort to safeguard the United States against terrorism.