comment-questions on liberties/terrorism

[tolbiny]

"I take it that you entirely discount any notion that an intercepted phone call from a foreign terrorist leader to his domestic cell awaiting instructions which bear details of the suicide attack could in any way prevent the attack"

Fisa was set up just to do this- you know how long it takes to get a wire tap from them? -3 days. Thats right, negative three days. you are allowed to apply for a tap up to 3 days after installing it.
So tell me again, why is it nessecary to circumvent the law.