American colleges have an anti-asian bias. I, for one, don't blame the Chinese for buying up the system so that they get decide who comes through the door now.
I don't think it's an anti-Asian bias but more of a pro-diversity bias. Colleges often want a good mix of ethnic groups such that having 60% Asians when the US population is about 8% Asian won't get them the mix they want. Whether the goal of "diversity" is more important than the "fairness" of raw merit is a complex moral and philosophical debate.
Having one group heavily- or over-represented may be seen as going against that goal. It's not necessarily personal against Asians. They may not want too many whites either.