Regional Authorities and Special Districts - As enacted, authorizes a housing authority-related entity participating in a mixed-finance project to form a self-insurance pooling arrangement, if the housing authority with which the entity is related has formed partnerships, limited liability companies, or other entities in which an authority, or an entity affiliated with the authority, is a general partner, managing member, or otherwise participates in the activities of the entity. - Amends TCA Section 13-20-104 and Title 29, Chapter 20.