The United States Department of Homeland Security was formed in response to the September 11th attacks.

The story behind the answer

True. After the September 11, 2001 attacks, the U.S. overhauled its domestic security structure. The Homeland Security Act of 2002 created the Department of Homeland Security (DHS), which officially began in 2003 by merging 22 agencies—including the Transportation Security Administration, U.S. Customs (now CBP and ICE), the Secret Service, FEMA, and the Coast Guard—to better prevent and respond to terrorism.

DHS’s mission spans preventing attacks, securing borders, managing immigration, protecting cyberspace, and coordinating disaster response—addressing the pre‑9/11 problem of poor interagency coordination. Early hallmarks included tighter airport screening and the color‑coded threat advisory. Memory tip: 9/11 led to “one home for security”—DHS unified many scattered functions under a single department.