MIT published the statistics on international students. It is interesting in that:
1. 12% of the undergraduates and 40% of the graduate students are foreign.
2. Of the grad students 25% are from the PRC, and totals 1,000 from PRC in both grad and undergrad.
In my time I don't think we had a single USSR student.
In addition, are the US students that poor that they cannot get admission? MIT funding is mosl;y from the US Government and perhaps one should be focusing on training ad educating US citizens first.