The issue isnt about race, or even if individuals from China are "bad". The problem is that any Chinese national in this country is almost certainly able to be forced into spying because their government will hold their entire family hostage. China has a long history of abuses  and absolutely horrific behaviour by their government, so nothing is beyond possibility with them.  Now if you can make a reasoned argument why risking the nations safety, so we can educate our enemies people, is so important? Please... have a go.