Deregulation and union busting greatly expanded in the 80s leading to the high point of the country in the 90s as well.
So capital flooded to the US.
So we all have our own theories.
The real question remains "What's best for America right now ?"
Actually the opposite. There were severe restrictions to emigration. They didn’t want people leaving the Soviet Union (or the satellite states) and going to the West. The Berlin Wall for example. Things weren’t so rosy behind the Iron Curtain.
But no, US citizenship, like everything else in this country, a cost.
https://www.cnn.com/2026/03/16/travel/renouncing-us-citizens...
And if you have unforgivable student loans because you believed the k-12 propaganda, then you can never "leave". You might be done paying them by the time you, uh, die.