You imply the fed gov is pushing the comms companies for this, but then you want to sue the companies?
Why not sue the fed gov? Why kill companies?
If the fed gov is pushing them, suing them will do no good.
You are right, if the government is the problem, then I would sympathize with the companies, and they might have a defense. Only a lawsuit would allow such information to come to light, though. If they are doing this on their own, they are in big trouble. A lawsuit against the feds would not be likely to succeed. You need civil discovery to get the facts out first.