Anyone who believes the NSA does not screen all domestic phone calls should do some serious re-thinking. Its operation in Utah now provides the data that previously (and presently) existing fascist governments could (and can)only dream of.
Note when you say “NSA”, there’s the military human side and the military machine side.
It is the NSA machine side that records everything about us. The human side needs a court warrant to listen in on us if we are domestic based.
If we are US persons traveling outside US jurisdictions, we can be tracked and recorded without warrant. Foreign persons, can be recorded and tracked anywhere.
The machines though, are allowed to record anything, in any place.
But there is a new issue to debate the philosophy of, a merging of NSA’s listening and tracking technology with AI.