After 9/11 attacks President George W. Bush said: “Every nation, in every region, now has a decision to make,” Bush added. “Either you are with us, or you are with the terrorists. From this day forward, any nation that continues to harbor or support terrorism will be regarded by the United States as a hostile regime.”
In response to September 11 terrorist attacks he announced the establishment of the Office of Homeland Security (OHS) to coordinate "homeland security" efforts. The office was headed by former Pennsylvania Governor Tom Ridge, who assumed the title of Assistant to the President for Homeland Security. The official announcement stated: “The mission of the Office will be to develop and coordinate the implementation of a comprehensive national strategy to secure the United States from terrorist threats or attacks. The Office will coordinate the executive branch's efforts to detect, prepare for, prevent, protect against, respond to, and recover from terrorist attacks within the United States.” Ridge began his duties as OHS director on October 8, 2001.
Shortly after this The United States Department of Homeland Security (DHS) was created after signing of Homeland Security Act of 2002 on November 25, 2002. Currently it is a cabinet department of the United States federal government and with the primary responsibilities of protecting the territory of the United States and protectorates from and responding to terrorist attacks, man-made accidents, and natural disasters.