Whats a matter, don't trust fellow greeks? :P
http://www.nicindy.org/about_us/by_laws/ its in the section 5 Comity.
Section 5.Comity. No member fraternity shall accept a petition for membership, grant colony or other affiliated status, or grant a charter to any group substantially representing an existing or previously resigned or disassociated colony or active chapter of another member fraternity, until the fraternity with which such group was previously connected has officially given written notice to the Conference that all rights have been waived by them, or until five years have elapsed from the date of resignation or disassociation. Potentially moved to the constitution.
Its aimed on the national and chapter level but they've applied it in cases of individuals too.
Thank you to the NIC for the short bylaw list, I was honesly expecting something longer than the pirates of the carribean "Pirates Codex."