In the case of Sunkist Growers, Inc. v. Winckler & Smith Citrus Products Co., the U.S Supreme Court ruled in favor of Sunkist Growers, a cooperative organization made up of citrus fruit growers from California and Arizona. The defendants, Winckler & Smith Citrus Products Co., alleged that Sunkist was violating antitrust laws by monopolizing trade and commerce among states through their pricing practices for oranges used to make frozen concentrate orange juice. They claimed that these practices were preventing them from competing effectively in the market. The court held that as a legitimate agricultural cooperative under Capper-Volstead Act (which provides limited immunity to certain cooperatives from antitrust laws), Sunkist's activities did not constitute an illegal monopoly or restraint on trade because they were merely processing and marketing products produced by its members without any predatory intent or purposeful exclusionary conduct towards competitors.

In the dissenting opinion for Sunkist Growers, Inc. v. Winckler & Smith Citrus Products Co., Justice Frankfurter argued that the majority's decision to allow a group of citrus growers to collectively process and market their products without violating antitrust laws was incorrect. He believed that this interpretation of the Capper-Volstead Act, which allows agricultural producers to form cooperatives, was too broad and could potentially lead to monopolistic practices in violation of antitrust laws. According to him, while Congress intended for farmers to be able cooperate with each other under certain circumstances through this act, it did not intend for them completely bypass competition rules or create monopolies within their industries.