Sure, not many skilled migrants return to their home countries, but this doesn't mean that they're not helping their home countries! They're still forming the s

Sure, not many skilled migrants return to their home countries, but this doesn't mean that they're not helping their home countries! They're still forming the sorts of international ties needed to provide opportunities for the home country. For example, by providing contacts and funds for starting companies in the home country, or collaborative research, etc. So it's not very clear to me that the feared "brain drain" is necessarily a "drain" -- in fact, India's very awful-seeming brain drain seems to have started to pay off pretty handsomely in the last 20 years.