U.S. Senate Appropriations Subcommittee on Homeland Security is one of twelve subcommittees of the U.S. Senate Committee on Appropriations. It was formally established in 2003 in response to the terrorist attacks of September 11, 2001 to oversee national security programs and the newly created Department of Homeland Security. The United States Senate Committee on Appropriations has joint jurisdiction with the United States House Committee on Appropriations over all appropriations bills in the United States Congress. Each committee has 12 matching subcommittees, each of which is tasked with working on one of the twelve annual regular appropriations bills.