I don't get why a private University can't decide who it wants or doesn't want to attend its school regardless of the metrics it chooses. For instance, I don't think that matching a Universities demographics to the "national" or "global" demographics is likely to produce highest caliber candidates. What if Jewish and Asian candidates consistently outperform other candidates, why shouldn't a private school be allowed…
Because life sucked for black people in the 60s and they managed to change the law?
The argument is: Imagine you and a friend have a private tutoring business. You should be able to have the freedom to pick whatever customers you want, your not a slave, your not obligated to provide a service for someone if you don't want to. Over time if there is demand for private tutoring that you and your friend aren't willing to meet, there will be others who will provide that service because there is profit in it.