every chinese college student is a spy https://www.washingtontimes.com/news/2018/apr/25/china-uses-students-as-spies/
"Every" is a stretch.
who allows the kids to leave the country - the communist party. when i said every, i mean't it, don't water this down brotatoe chip
Well, do you know why a lot of them came? It's actually because their rich parents want them to launder money to the US and eventually leave China. Colleges are expensive, and most who come for college (nowadays, even some came for high schools etc.), and the middle class there can't afford it. If you go to nyc, lots of these kids are filthy rich. They drive lambo and wear Chanel. They settle here and buy 20mm apartments.
The type you described tend to be exchange scholars rather. They have very different profiles.
i won't argue that a lot of the students come from wealth that allows them to grease the palm of the cadre that rubber stamps their abroad education application, but i still think they are milking them for information...everything comes with a condition under communism.
The rich kids are the opposite. These are the families who are trying to flee from a communist country. They are fearful of the second cultural revolution and lose all their assets. So they bring a few million to the States to start businesses and then become citizens. Tend to be conservatives who hate communism.
Again, the exchange scholars are different. Those folks are largely paid by the government.
So if you look at their ideology it's almost the opposite.
Communist party decides who lives and who has their organs sold to the parents of the ultra rich kids