Chinese students studying at American universities may not necessarily be looking to set down roots in the US. Most of them return to China after getting their degrees.
As for the question of assimilation, it takes a generation for cultural attitudes to shift. People aren't going to abandon the cultural values of their homeland. But their children will grow up as Americans and adopt more American ways of thinking.
As for the question of assimilation, it takes a generation for cultural attitudes to shift. People aren't going to abandon the cultural values of their homeland. But their children will grow up as Americans and adopt more American ways of thinking.