I wouldn't be comfortable with 90% necessarily, but at the same time if these 90% want to come to the U.S. and remain (for at least some nominal period of time)

I wouldn't be comfortable with 90% necessarily, but at the same time if these 90% want to come to the U.S. and remain (for at least some nominal period of time) and contribute to U.S. interests then I'd rather that they were over here working to make the country great instead of wherever they came from. Fixing education here in the U.S. is itself an important task but it's orthogonal to immigration. If our kids want to do basket-weaving instead of STEM then the next best thing is to let those from overseas who want to come to the U.S. and work actually do so. But there should be plenty of capacity in the universities for non-immigrants to get STEM majors if they want. At least I had no difficulty. Despite all the mud the U.S. has on its name internationally, the country is still in a great position to execute a "brain drain" (for lack of a better term) and it would be pretty foolish to miss out on that, especially as the world becomes increasingly specialized.