September 11 (9/11) Attacks
Authorization for use of Military Force Against Terrorists
United States Capitol, Washington D.C., U.S.
On September 14, 2001, the U.S. Congress passed the Authorization for Use of Military Force Against Terrorists. Still in effect, it grants the President the authority to use all "necessary and appropriate force" against those whom he determined "planned, authorized, committed or aided" the September 11 attacks, or who harbored said persons or groups.