> If they don't then they will be arrested on return to the country.
A nationwide scheme to arrest people who leave the country, merely because they have in demand skills is absurd.
You are not going to be able to arrest people, who have in demand skills or prevent them from fleeing the country.
Like, what does that even mean? For how long do people have to be slaves to the nation?
People move countries all the time, and the idea that one is now going to be arrested for something that is perfectly normal and common is absurd.
What, is it just now illegal for people in a nation to ever spend time working outside of the country? Do you understand how ridiculous that is, to prevent people from leaving or working outside the country, forever?
> As another example the US requires citizens living abroad to pay taxes.
The most powerful country in the world can get away with this, yes. But a smaller nation isn't going to be able to have enforced prevention of high skilled labors leaving the country.