You're assuming that there weren't enough spots for Americans and that they were getting denied due to foreigners. That's not true. For Americans who want a college education and don't get one is mostly because of the cost of education, which foreign students subsidize.
This is a classic case of shooing yourself in the foot only because of a fear of the foreigner.
This is a classic case of shooing yourself in the foot only because of a fear of the foreigner.