While this is anecdotal it does worry me that we invest (as a society, in the general sense) in educating people in the US and then don’t do enough to keep them here. It should be easy to obtain a permanent work visa after graduating. You’d need controls like perhaps a minimum degree earned, minimum number of credits earned/years in school and approved institutions but it seems feasible. It would do a lot to retain people that not only we’ve invested in, but who (hopefully) have had a chance to integrate culturally at a young age and formed friendships and connections that will help anchor them.