If it becomes big enough, they can't "deport" everyone. The only silver lining in the US right now is that it is way too big (and too stupid) to pull off this sad excuse of a blitzkrieg on its citizens.
I really hope I'm not proven wrong, but something of that scale is nearly impossible to pull off in optics with the amount of recording we can do now. The equivalent in America is about 40m Americans being "deported". That's the entire Californian population and then some.