Portland City Code ch. 6 (Buildings and Building Regulations) § 6-232

Tenants Union means any group, organization, committee,
collective, association or entity, whether incorporated or
unincorporated, of any kind, whatsoever, in which tenants
participate and which exists for the purpose, in whole or in
part, of dealing with Landlords concerning rental conditions or
any matter related to the Landlord-tenant relationship, including
but not limited to the rights and interests of tenants under this
Chapter.
(By Referendum, 11-3-2020; By Referendum, 11-8-2022)

6-100
City of Portland Buildings and Building Regulations
Code of Ordinances Chapter 6
Sec. 6-233 Rev. 11-8-2022