Creation
In response to the September 11 attacks, President George W. Bush announced the establishment of the Office of Homeland Security (OHS) to … 展开

The Department of Homeland Security is headed by the Secretary of Homeland Security with the assistance of the Deputy Secretary. … 展开

In 2011, the Department of Homeland Security phased out the old Homeland Security Advisory System, replacing it with a two-level National Terrorism Advisory System. The system has … 展开

Since its inception, the department's temporary headquarters had been in Washington, D.C.'s Nebraska Avenue Complex, a … 展开

Whereas the Department of Defense is charged with military actions abroad, the Department of Homeland Security works in the civilian sphere to protect the United States within, at, and outside its borders. Its stated goal is to prepare for, prevent, and respond to domestic … 展开

The seal was developed with input from senior DHS leadership, employees, and the U.S. Commission on Fine Arts. The Ad Council – which partners with DHS on its Ready.gov campaign – … 展开

Congressional budgeting effects
During a Senate Homeland Security and Governmental Affairs Committee hearing on the reauthorization of DHS, Deputy Secretary 展开