[DubaiSis]

It sounds like you've got quite a bit of support so I'd start using it. Hopefully the local alumni have some connections. And your national org should be able to provide insight and possibly do the talking on your behalf. And when you communicate with the University or IFC, make sure your requests or statements are clear, concise and to the point. I would find a way to justify your expansion using the language they provide. If it's contradictory, that's pretty easy; just use the parts that work for you. It will either work by them not knowing what their bylaws say or by making them fix their bylaws and clarifying your position.

But I think I'd also start marketing heavily to get your group to a point where they really have to let you in. If you have by-laws, standards, organized meetings, do a philanthropy (even if it's off campus), follow the drinking and other behavior rules to a T and probably better than the existing fraternities, what are they gonna say? You can't make it on their campus?