“Congress…implicitly authorized the President [Bush] to carry out electronic surveillance to prevent further attacks on the United States in the Authorization for Use of Military Force [AUMF] passed on September 18, 2001. AUMF has no limitation on time or place–only that the president pursue al Qaeda. Although the President did not need, as a constitutional matter, Congress’s permission to attack al Qaeda after the attacks on New York City and the Pentagon, its passage shows that the President and Congress fully agreed that military action would be appropriate.”
– John Yoo, War By Other Means, Page 115