He is a proud American. America gave him the opportunity and he should be loyal to America. Truth be told - talented people like him would be frustrated here - caught up in the red tape tangle, religion and caste bullshit. Lots of talented people leave India - not because they do not love it - they leave it because they do not have the energy to deal with all the bullshit that goes on in our daily lives - CORRUPTION, CORRUPTION EVERYWHERE.
