All the Hollywood & TV & Stage unions do that. Also professional sports unions. The Bar Associations and the AMA are not quite unions though they certainly ad

All the Hollywood & TV & Stage unions do that. Also professional sports unions. The Bar Associations and the AMA are not quite unions though they certainly advocate and lobby strongly on behalf of their professions. For the Bar there may be confusion because of the names of licensing agencies. In California, the state agency is the State Bar of California, but that has nothing to do with various bar associations.