They almost certainly do. There were rumors of a Chinese student ban during Trump's last tenure and I remember reading news stories (https://www.insidehighered.com/news/2018/11/29/university-il...) about universities having insurance policies to protect themselves from revenue loss. There should be enough Americans to fill the empty seats so it makes you wonder if university finances rely on international student tuition. So you would expect that to translate into admissions changes.
Reading other comments on here it almost seems like people feel it would be bad if American universities like Harvard had more Americans. Like there is something morally wrong with that. So that's probably a factor also.
Reading other comments on here it almost seems like people feel it would be bad if American universities like Harvard had more Americans. Like there is something morally wrong with that. So that's probably a factor also.