Most right-wing politicians behind this kind of thing have no idea how much foreign students are essential for american scientific and technological leadership.

Most right-wing politicians behind this kind of thing have no idea how much foreign students are essential for american scientific and technological leadership. If they are so hell bent on keeping the "Empire at all costs", on keeping America as a hegemon, brain-draining their adversaries is an excellent strategy. Any chinese materials sciences specialist working on hypersonic missiles in America is on one less chinese guy doing the same in China.