If you guys think the NSA just started to listen in on long distance calls reicently, your living in fantasy land... LOL
Acually, the way I hear it, to get around domestic laws, we have "wink wink" agreements with our friends around the world to listen in on each other, and share the take.
So, we used to listen to England for example, they wire tapped us, and we gave them our take, and they gave us theirs.. totally leagal by the way..
Here's another one. We actually wire tapped entire undersea phone lines during the cold war. (Yep, the CIA had developed ways to get submarines down to wires deep in the sea, below depths that the Soviet's thought we could dive to, and then "tap" the entire set of wires they were using for communications.) Did it in Germany too. Heck, we've been tapping lines and monitoring chatter for decades. We had the Japanese codes cracked, and many of the German ones too. (And many other things that nobody is going to talk about even now.)
It's just good intell. (Anyone that says otherwise, is a total fool IMNSHO.)
The fact that we have had NO terrorist plots blowing up stuff here in the USA over the past 5 years is in large part attached to this listening to the phones, and using massive amounts of computer power to sift through all the chatter, and find the stuff that matters, get it to the people who can do something about it, and then act against the terrorists before they blow someone up.
England is a good example. The terrorists were stupid and talked, and were discovered, infiltrated and then arrested. I say give them the water tourture, get all the info you can out of them, and then give them a long life being someone's bitch in prison.