In the case of Carpenters & Joiners Union of America, Local No. 213, et al. v. Ritter's Cafe et al., the U.S Supreme Court ruled in favor of Ritter's Cafe and other businesses that had been picketed by a local union seeking to force them into signing closed-shop agreements (an agreement where an employer agrees to hire only labor union members). The court held that such picketing was not protected under federal law as it constituted an unlawful restraint on trade or commerce among several states. This decision upheld Texas state laws prohibiting such practices and rejected arguments from the unions claiming protection under federal labor laws like National Labor Relations Act (NLRA). The ruling emphasized that while NLRA protects employees' rights to self-organization and collective bargaining, it does not sanction coercive activities aimed at compelling employers into accepting terms they do not agree with.

In the dissenting opinion for Carpenters & Joiners Union of America, Local No. 213 v. Ritter's Cafe, it was argued that the majority had overstepped its bounds by interpreting Texas law in a way that contradicted previous decisions made by Texas courts. The dissent contended that this case should have been decided based on state law rather than federal labor laws and policies because it involved a dispute between private parties about an alleged tortious interference with business relationships. They believed there was no substantial evidence to support the claim that union activities were aimed at coercing or restraining trade among states as required under federal antitrust laws. Therefore, they felt this issue fell outside of Congress' jurisdiction and within state authority instead.