diverse at kappa

No I'm not a kappa to begin with. I'm not even in the the Greek system. I'm a sophomore this year at USC, and I'm rushing this year. I wanna just comment how most of the houses aren't diverse. The only house I've seen that is diverse is kappa. I'm not saying this to support them because I honestly don't care about them. It's just out of all the house they have an ounce of diversity. Why aren't the sororities more diverse?