Ruling in Vergara v. California, Treu struck down five decades - old California laws governing teachertenure and other job protections on the grounds that they violate the state's constitution.
Villaraigosa's support for a legal challenge to state tenurelaws and his accusation that teacher unions blocked change while he was mayor, made the former Los Angeles union organizer a pariah to his old union, and to the statewide CTA, years ago.