Mass surveillance may be illegal anyway as you say, but what is the relevance of that? I hope you don't take it being illegal to imply that the government isn't going to do it.
If you think the gov't is doing illegal things to US citizens then provide the proof and expose it. I don't have evidence so I am not going to speculate either way.
If you think the gov't is doing illegal things to US citizens then provide the proof and expose it. I don't have evidence so I am not going to speculate either way.