Really?
70% of the people who live in the Less Developed World want to emigrate to the USA, Europe, or Can-Aus-NZ.
On the flip side - almost no working age person in the USA, Europe, or Can-Aus-NZ wants to emigrate to a Second or Third World country.
Fact is, most citizens of those countries (Brazil, Russia, India, China) would happily emigrate to the USA.
I don't see anybody here packing their bags and looking to move to any of those aforementioned countries. Not even, sadly, anybody from the Left.