On the other hand, there are Americans who firmly believe that highly educated people like yourself from poorer countries shouldn't be giving your knowledge and

On the other hand, there are Americans who firmly believe that highly educated people like yourself from poorer countries shouldn't be giving your knowledge and work to first world western countries that are already wealthy. They think that people like yourself should be back at home, trying to make their own country better, rather than coming to make some other country richer. https://en.wikipedia.org/wiki/Brain_drain https://en.wikipedia.org/wiki/Brain_drain