An interest tidbit - at one of our very large, prestigious chapters, there are several openly gay sisters. Two of them are dating, they both live in the chapter house, and it hasn't caused any problems. They're so open about it that they discussed it with our CLC. If that makes more PNMs cut us during recruitment, fine. I'm not ashamed that they are gay sisters in my sorority, and I wish there were more. I wish there were more black, brown, yellow, and purple ones too, although I have a feeling some of those colors won't be happening for a while.
Yes, your reputation is only as strong as your weakest member - but your weakest member should be the girl who embarasses you by her behavior at the bars or the fraternity parties, the girl who swears in letters, not the girl who brings a date to formal that uses the same bathroom as her.
I am EMBARASSED that there are sorority chapters who will cut on this. How dare you! What do you do, lie to the PNMs about how much you love diversity and then introduce them on Bid Day to their pledge classes of blondes and brunettes with a "token" redhead?
Yes, this probably might cause a problem for the first chapters who do it, but you know what, so did accepting black women, accepting Catholics, etc - we're all still going strong, but with some of those attitudes, we won't be for much longer.
ETA: AXO_MOM_3 said that a girl should "feel the most comfortable around her sisters." I have a lot of sisters nationwide (I'm guessing it won't be a problem with the Canadian ones) who I don't know that I would feel comfortable around - some of them are from deep down in the Bible Belt and of a different political, economical, and religous backround than myself. I don't think we'd get along about anything outside of Gamma Phi Beta...and while I don't necessarily think that's wrong, and I'm still glad they're my sister, there are certainly other people, Greek and non-Greek, that I'd feel more comfortable around.