NSA

Attorney General Gonzales:

"History is clear that signals intelligence is, to use the language of the Supreme Court, 'a fundamental incident of waging war.' President Wilson authorized the military to intercept all telegraph, telephone and cable communications into and out of the U.S. during World War I. The day after Pearl Harbor, President Roosevelt authorized the interception of all communications traffic into and out of the U.S. These sweeping measures were seen as necessary and lawful during critical moments of past armed conflicts. So, too, are the more focused intercepts of al Qaeda during our current armed conflict, especially given the nature of the enemy we face."

Is there any reason to believe that "history" is not clear on this question?