It depends on what you mean--is your local trying to establish a Beta chapter of your sorority, or does your local want to affiliate with an NPC sorority? If your local wants to affiliate with a national sorority, then it is up to your college administration to decide if your campus is open for expansion. If they decide your campus is open for a new national sorority to establish a chapter, then your sorority would have the option of affiliating with a national. I would check with you college's student affairs or Greek Life office to see if they would consider your campus open for expansion. For more on how the NPC handles adding new chapters/expansion procedures, go to
www.npcwomen.org