Here’s an interesting item: http://www.ajc.com/metro/content/metro/stories/2006/12/08/1208metfrat.html
It seems that there’s a Christian fraternity, Beta Upsilon Chi, which stands for "Brothers Under Christ" (and I will bite my tongue rather than speculate on what that means). But it had to sue to get recognition at the University of Georgia because of its policy (the fraternity’s policy) of not allowing non-Christians to join. Apparently the university backed down.
So let me see if I have this straight—when a fraternity discriminates against non-Christians, it’s okay, but when the the university refuses to recognize the fraternity because of its discrimination, it is wrong? In other words, religious freedom includes the right to discriminate against the non-religious?