The Department of Homeland Security (DHS) was established in 2002 in response to the September 11, 2001 terrorist attacks, with the goal of safeguarding the United States from a wide array of threats. It is one of the largest federal departments, integrating 22 different agencies, including the Federal Emergency Management Agency (FEMA), U.S. Customs and Border Protection (CBP), U.S. Immigration and Customs Enforcement (ICE), and the Transportation Security Administration (TSA).

DHS’s mission is to protect the country from terrorism, cyberattacks, and natural disasters, while also managing immigration, border security, and trade. Key areas of focus include counterterrorism, disaster resilience, securing cyberspace, and ensuring the safe movement of people and goods across U.S. borders. The department works to prevent potential threats before they reach the homeland, while also responding to emergencies and facilitating recovery efforts during disasters.

Additionally, DHS plays a critical role in preventing cybercrime and enhancing cybersecurity, working closely with public and private sectors to safeguard critical infrastructure, like power grids and financial systems. It collaborates with international partners, federal agencies, and local authorities to maintain security and enforce laws across various domains.

Through its diverse agencies and mission sets, DHS remains central to protecting the United States against both man-made and natural threats, ensuring the safety and resilience of the nation.