This is one case where I will disagree with folks here.
School is about education and if a school wants to use how well someone has learned material through testing (which I agree is not a perfect measure but the best we got) then I see nothing wrong with that. Unless you can prove that underrepresentation is due to targeted discrimination then you simply need to do better and step your game up.
No doubt cheating is abundant among some foreign students. But at the same time, there is also a large percentage that just work harder than the average student. On my college campus, I see a lot of these foreign students spending all day on campus and in the library studying way into the evening and there have been times I've gone to the library during winter breaks and holidays and they will be there.
If you put in the work without cheating and got rewarded by being able to attend this school then it is what it is. I personally wouldn't want to get into such a program because of a quota. It minimizes the hard work that I did put in by not judging me on my work but instead on the color of my skin .
If Asians are overrepresented and it's purely based on merit, well step your game up and see what they are doing and try to match up .