Imagine most migrants globally one day would return happily to their native countries!!! https://www.elitetrader.com/et/threads/who-will-win-the-presidency.301621/#post-4311869
They'll go home at the point of a gun, not voluntarily. I can't really blame them, but if you let them in, they're staying.
They can always stay in Ethiopia and get work. As long as they know how to use heavy artillary, there will always be a job.