This is primarily a problem with immigration policies and bureaucracy that make it difficult to remain in the U.S. after graduation.  Rather, the U.S. should be actively recruiting such high skill people and trying to handhold them through the paperwork.<p>I went through this process with my wife (who also holds a Ph. D. in a technical field, though non-computing), and even being married to a U.S. citizen, the process is so opaque and convoluted and petty, that only the most dedicated would-be immigrants follow through with it.