United Association of Journeymen and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada, Local 32, Afl-Cio v. National Labor Relations Board, National Labor Relations Board v. United Association of Journeymen and Apprentices of the Plumbing and Pipefitting Industry of the United States and Canada, Local 32, Afl-Cio · Ninth Circuit Court of Appeals · 1990 | Caselegis