The US education system already produces people as good as the best minds from foreign countries. That has been the case for well over a century. It doesn't pro

The US education system already produces people as good as the best minds from foreign countries. That has been the case for well over a century. It doesn't produce all the best minds, of course, no nation can do such a thing and that's why high-skill immigration is valuable whenever you can get it. The argument for the US taking in the best from around the world, is that more is better when it comes to that. The US is a massive, diverse place, filled with good and bad outcomes. Just as Europe or the EU are, just as Asia is. There is enormous poverty and tens of millions of poor education outcomes across Europe. There are literally over a billion very bad outcomes spread across Asia, Africa and Latin America in terms of poverty and education. Asia still has a billion people trapped in third world outcomes. The top quarter in the US will match up very well against the top quarter from most peer nations. There may be a few exceptions among tiny elite nations, like Switzerland, just due to the fact that 1/4 = 80+ million people in the US.