After the September 11, 2001 attacks on the World Trade Center, President Bush called on Congress to pass a bill creating a federal agency whose responsibility it would be to take steps to protect the "homeland." Congress responded by passing the Homeland Security Act of 2002, creating the Department of Homeland Security. The Department has five divisions: The Directorate of Border and Transportation Security, The Directorate of Emergency Preparedness and Response, the Directorate of Science and Technology, the Directorate in Information Analysis and Infrastructure Protection and the Directorate of Management.
There are many facets to homeland security. Included in the term are: biodefense, border security, transportation security, and emergency preparedness. Many states also have departments of homeland security with their own websites