I have one cousin (not an IIT grad) who worked for about a decade in Manhattan and then happily moved back to Mumbai. His brother also moved to the USA and has

I have one cousin (not an IIT grad) who worked for about a decade in Manhattan and then happily moved back to Mumbai. His brother also moved to the USA and has no desire to return to India. Ironically the harder you make it for people to enter, the more likely they are to stick around rather than move back and forth.