Warrantless surveillance are unconstitutional.
But President Obama's Justice Department has taken the position that you lack the standing to challenge the law unless you know for sure you are under surveillance.
And you cannot know if you are under surveillance because that's a matter of national security.
So if you, as a presidential administration that hates civil liberties as much as the last two (and presumably the next one) have, then all you have to do to insulate yourself from constitutional challenge is to prevent anyone from being able to bring a lawsuit.
Where is Yossarian when we need him?