The key is = TIME
You cannot waste 72 hours dealing with a court and a judge who may possibly tell you NO! (because politically he doesn't agree with you). You have found a cell phone on the battlefield - it contains phone numbers in the USA - the moment those number are triggered - BY A COMPUTER - the computer starts listening for key words (we don't know what those words are - and neither does the enemy). When those words are triggered - the wire tapping begins.
At the time those words have triggered the computer to start wire tapping - you cannot WAIT 72 HOURS for some court to tell you - Yes, you can listen to the enemy who is calling here to set up attacks aginst your country. If you wait 72 hours - THE CONVERSATION IS OVER AND ANY INFORMATION YOU MAY HAVE BEEN ABLE TO GET ABOUT AN ATTACK IS LOST.
You're naive or just plain ignorant if you cannot see the difference between this NSA program and the FISA court.
THIS IS NOT DOMESTIC SPYING. The dems know that - but they hate Bush more than they hate the terrorists.
Given your ignorance (the existing legal system allows monitoring to begin immediately and be authorized retroactively for precisely that reason), no one should pay any attention to your blitherings on the subject.
You can start listening in on conversations and you have 72 hours AFTER you have started listening in to get the warrant.
Forcing these standards to fit the fluid foreign/domestic situations we face today is national-suicide.