The Department of Homeland Security (DHS) is a U.S. federal agency created, following the September 11 attacks, with the aim of safeguarding the country from various threats. It was established under the Bush administration, uniting 22 federal departments and agencies to enhance national security and emergency response. DHS’s mission spans from anti-terrorism to cybersecurity, border security, and disaster preparedness, making it a central component of the U.S. government’s defense infrastructure.