That's an interesting claim - you gotta source for that?
Charles Murray's "Facing Reality". It includes many tables of statistics that may interest you.
Note that despite a lot of anger toward him, I've read several of his books, and he goes to great lengths to state that he doesn't believe we should discriminate against people based on their race. I highly recommend reading his books rather than listening to commentary about them.
don't get me wrong, discrimination is bad, but let's not act as if discrimination in getting into Harvard is in any way comparable to not being able to get a callback at McDonalds because you're black (the food industry had the highest white/black callback discrimination according to Figure 9 in the paper).