USA or any developed countries are evolved societies that can create a right platform for right people. The right person being from India or Afghanistan doesn’t matter. Whereas the case of India is an evolving society wherein there is no platform itself where’s the question of proving onself on it. Probably the day India becomes evolved in all spheres we too can be a sink of brain drain. There’s no point of feeling too much proud or jealous of the brain drain. The only thing required is action at all levels to reverse it.