William J. Brennan, Jr., National Woodwork Manufacturers Association v…
“ It is entirely understandable that Congress should have sought to prohibit product boycotts having a work preservation purpose. Unlike most strikes and boycotts, which are temporary tactical maneuvers in a particular labor dispute, work preservation product boycotts are likely to be permanent, and the restraint on the free flow of goods in commerce is direct and pervasive, not limited to goods manufactured by a particular employer with whom the union may have a given dispute. ”
