If they were united today with the same people as today, they would still be filled with people who apparently see service to the US as the highest priority. And it would grant the leadership a position above state laws - such as treason - that today could in theory be used to end the subservient relationship to the NSA.

China and Russia are probably better at spying at EU countries then EU countries are at spying at them, but unlike the NSA they are not handed access on a platter. Unless they get NSAs data of course.