Association of Contracting Plumbers of the City of New York, Inc. v. Local Union No. 2 United Ass'n of Journeymen & Apprentices of the Plumbing & Pipefitting Industry of the United States & Canada

LUMBARD, Circuit Judge:

These two appeals involve companion questions about a decision of the United Association of Journeymen and Apprentices of the Plumbing Industry of the United States and Canada, AFL-CIO (“United Association” or “UA”), to award the exclusive right to perform certain work to one of its affiliated local unions, pipefitters Local 638, to the exclusion of other member unions, plumbers Locals 1, 2 and 371.

In the first appeal, The Association of Contracting Plumbers of the City of New York, Inc. and the Contracting Plumbers Association of Greater New York, Inc. (collectively…