I think there's a fair chance we could actually roll this back, given enough pressure and attention. The question is how to know that the NSA/CIA is really not monitoring us. Answer: citizen groups watching the watchers. That's right: we monitor the NSA and the CIA, and if blocked, immediate court action.
I'm not saying this will really happen. But I don't think it's impossible, and I think many of us would agree that it's warranted.