[andygrovetheman]

Many scientists and academics immigrated to the US because of its values: it was a free country and a multicultural country where immigrants are welcomed. The knowledge drain moved smart people to a free country to build a knowledge economy. (Economists too: the Bretton Woods system was built in part by smart people who fled the autocratic or fascist countries). That system of free exchange between stable democracies with social safety nets kept peace in the world for 50 years.

Not sure this brain drain has equal intentions for rule of law and democratic societies.