"They already have had the ability to snoop on electronic communications for ages."
I seem to remember many years ago (ok, it was only the late 90's) that Mark Thomas covered something about this with his little Hot Air Balloon Over Menwith Hill stunt. Whilst he was in the balloon, he pulled out his mobile phone and rang his mum and started saying (not entirely) random words along the lines of "bomb" and suchlike. At which point his mum asked if he was high. Which he sort of was at the time (hot air balloon, remember?)
The general thrust of the piece was the listening post that the NSA had built slap-bang in the middle of Menwith Hill, without any real public knowledge or oversight, how the facility could tap into 100,000 live phone conversations at the drop of a hat (my memory is a bit tarnished about the figures here...), but the one thing they had forgotten to do was apply to the local council for building permission, which meant that there was a tiny little legal loophole and the airspace directly above the listening post was effectively open (no flight restrictions). So he flew right through it. And made his MI5 file all the larger because of it.
I seem to remember at the time thinking "how can they get away with this; surely this can't be right, let alone legal?". Then the Snowden leaks came along, and the Menwith Hill episode was the first image that floated to the top of my memory. And I was proven wrong on both of those last counts, as there seems to be no moral or legal argument that can be used to stop this sort of behaviour.
Sorry, got to go, incoming choppers and all that...