Official website of the Department of Homeland Security
History
The Department of Homeland Security combined 22 different federal departments and agencies into a unified, integrated cabinet agency when it was established in 2002.
Creation of the Department of Homeland Security
A summary of historical laws and regulations constructing and modifying the existing Department of Homeland Security.
Department of Homeland Security Seal
DHS seal was created in 2003 to symbolize the Department's mission of preventing attacks and protecting Americans on land, sea and air.
Homeland Security Advisory System
Chronology of Homeland Security Advisory System from implementation until replaced by National Terrorism Advisory System.
Secretaries of Homeland Security
The former Secretaries of the Department of Homeland Security.
Who Joined DHS
DHS was created through the integration of all or part of 22 different federal departments and agencies into a unified Department.
Portraits of Secretaries of Homeland Security
The Secretary of Homeland Security portraits are a tribute to the Secretaries' service to the Department and the nation.
History of the NAC
This page traces the history of the Nebraska Avenue Complex (NAC) through its origins as a girls seminary to its role as a code breaking facility during World War II and its current incarnation as the home of the headquarters of the U.S. Department of Homeland Security.