Invasions: an act or instance of invading or entering as an enemy, especially by an army (http://dictionary.reference.com/browse/invasions)
Repel: to keep off or out; fail to mix with: Water and oil repel each other. (http://dictionary.reference.com/browse/repel)
Second, I mean warranted as in "has a warrant". From wikipedia (https://en.wikipedia.org/wiki/PRISM_(surveillance_program)_ "U.S. government officials have disputed some aspects of the Guardian and Washington Post stories and have defended the program by asserting it cannot be used on domestic targets without a warrant, and that the program receives independent oversight from the executive, judicial, and legislative branches."
Third, I tried to let you people know that my scenarios were a bit factually incorrect by saying that I was "pulling the numbers out of my arse"! That some aspects of Scenario B were wrong beyond just the numbers shouldn't be surprising. Furthermore, where's the nitpicking about Scenario A then? I spent even less time thinking about it, so it should a little easier to pick apart.
I blew up at mikeash not because he was criticizing you, but because he is being blockheaded. As are you.