Fire on invaders a few times, and they probably stop coming, so you don't have to fire on them anymore.
Even if that somehow stopped any more from coming (which, no offence, I sincerely doubt due to the sheer numbers involved), where does that leave the rest of the tens of millions already residing here? There would need to be a coinciding deportation campaign on a scale not seen since Eisenhower, and God only knows what else to even begin tackling the problem.
Fire on invaders a few times, and they probably stop coming, so you don't have to fire on them anymore.
Even if that somehow stopped any more from coming (which, no offence, I sincerely doubt), where does that leave the rest of the tens of millions already residing here? There would need to be a coinciding deportation campaign on a scale not seen since Eisenhower, and God only knows what else to even begin tackling the problem.