I'm sure there are people who will gladly move to India for a few years, but if they are improving their careers, which is not necessarily (although, in practice, it usually is) mutually exclusive with a pay cut. However, no one talented is going to travel to a foreign country for the same job, much less a step back. Also, giving enough pay and perks that they can afford to see family in the US for at least 4 weeks out of the year is a must.