How would you stop them? I'm imagining all sorts of possibilities, and all of the effective ones require totalitarianism. You'll need a large surveillance netwo

How would you stop them? I'm imagining all sorts of possibilities, and all of the effective ones require totalitarianism. You'll need a large surveillance network to watch the "at-risk" folks, secret police to infiltrate / interrogate / kill the smuggling networks that will arise, internal passports to track movement, and a nice political structure that will be able to maintain this without pesky things like folks trying to vote for "freedom" and other nonsense like that. Maybe some reeducation camps to correct the misguided ones who try to escape.