The term came about following enactment of the Homeland Security Act of 2002 and reorganization of many U.S. government civil agencies effective March 1 , 2003 , to form the United States Department of Homeland Security after the September 11 attacks , and may be used to refer to the actions of that department , the United States Senate Committee on Homeland Security and Governmental Affairs , or the United States House of Representatives Committee on Homeland Security
September 11 attacks
September 11 attacks
Homeland security