That's why scientific and technical progress in the United States is being driven increasingly by "légion étrangère." For example, a good part of participants and winners of international olympiads in mathematics, IT, or physics, who stand under colors of the United States, lost their chances to be elected the President once and for all ;) That being said, center of the economical and technological gravity is clearly shifting back to Asia, where it resided for the most part of the humanity’s history.