It's not that the US is a small country - it should be possible that some of the not so recently arrived families have competitive children, too. Let the families live two generations in the US and they are no longer competitive or no longer motivated enough? How attractive is it really to be in the US, when the 'dream team' is all imported from 'hungry' countries... what is with the rest of the people? The need education, too. Jobs. Well paid jobs.