Comment by adamc
Einstein didn't emigrate to get rich, he emigrated because the Nazi's took over Germany. Germany had the best universities in the world before they took the path of self-destruction. So that was a second, separate event that helped America.
America stills gets a lot of immigrants.
Well, hopefully nothing like that happens in the US - that is to say an ideologue that ruins a country by ostracizing and then removing skilled immigrants or deters them from coming in the first place. Perhaps we can examine some recent large scale survey data to determine if the US populace gives a shit.