European snooping agencies seem to be quite happy to cooperate with them, so that argument doesn't really count.

They have the active cooperation of many governments and they have a lot of 0 day.

Be careful that you do not equate "power" and "authority". As Canada mentions below, they have top talent, researchers, and likely many exploits. It seems foolish to believe that geographical location of entities on a globally connected network has a nontrivial bearing on whether the NSA can penetrate it.

Key sentence: "Your protection lasts just up until the point where protecting you becomes inconvenient."