Pretty clear cut to me. The government is spying on all of us without cause. Rand Paul is right, it they suspect we did something then get a warrant, no warrant no spying. Period. Another thing he said is they collect so much data they cannot see the forest for the trees, thus the real criminals - like Tsaraneav slips though the cracks... they were warned about them and that would have been appropriate for a warrant and more - yet they didn't even know they left the country.
Bottom line, government is out of control and we are all their all too willing dupes.