“留学生们都自觉不自觉成了过河之卒”包括反华的在内，莫大的讽刺啊！

这点我深有体会。The mere presence of hundreds of thousands of Chinese graduate students in hard sciences, regardless of their political views, has decimated the dwindling pool of native talents.
The million dollar question is whether the West, in particular the US, will have to trust Chinese scientists and engineers trained in the West with the future of crucial Western technologies.