Maybe his parents money was all the school really cares about. Paying tuition is all that matters.
For many schools it is all about money.
The more international students enrolled the more money paid to them by the students and certain governments.
I remember years ago that someone wanted to put curbs on foreign students and many universities had a complete meltdown.
One university in Oklahoma had a majority of it’s students enrolled from foreign countries.
Therefore, any law curbing foreign participation would have severely curtailed raises and new buildings for the school.