What Umbrella Org is this?

[sage_la]

Thank you, the part on duel NPC/NPHC memberships is very clear to me and I've given up any hopes of that. I have gone through the sticky post and done searches on the topic, but I don't really see much on asian/hispanic and other types of cultural sorors. I'm also having issues finding clarity on the national/local websites for the groups as to what their rules are, so I'm really hoping someone might know the answer.

I'm also a little confused, I was under the impression that most national sororities were members in a larger organization (like NPC) that sets up blanket rules. Am I completely mistaken with that? Thank you again.