Personally, I don't understand the monomania to prosecute telecoms that were told to cooperate with the US government.  If they had refused, they would have been brought up on charges for NOT cooperating.  If anyone did anything wrong, it was the executive branch, and they're legally allowed to spy for national security reasons.  Just as if the police would commandeer your car to use to catch criminals, you should not be held criminally responsible for them breaking traffic laws for doing so.  And if you refuse to allow your car to be commandeered by a law enforcement officer in the performance of his duties... you can be brought up on obstruction charges.

So, I just don't get the zeal some have to "get" the telecoms, and fully support the immunity for them.  I just say that if it can be proven that the executive branch did something illegal with their powers of spying, they need to be nailed to the wall.