In the 1923 case of United States v. New York Coffee and Sugar Exchange, Inc., et al., the U.S Supreme Court dealt with an issue related to antitrust laws. The government accused the defendants, who were members of a coffee exchange, of conspiring to manipulate prices in violation of the Sherman Antitrust Act. However, they argued that their actions were protected by a clause in the Webb-Pomerene Act which allowed for associations solely engaged in export trade activities. The court ruled against them stating that while this act did provide some exemptions from antitrust laws for exporters' associations involved only in foreign commerce; it didn't protect those also involved domestically or those manipulating domestic market conditions indirectly through their export operations. Therefore, even though these defendants primarily operated abroad but had significant influence on domestic markets as well - they could not claim immunity under Webb-Pomerene Act.

In the dissenting opinion for United States v. New York Coffee and Sugar Exchange, Inc., it was argued that the majority's decision to uphold a conviction under the Sherman Antitrust Act was incorrect due to an overly broad interpretation of what constitutes "restraint of trade." The dissenters believed that not all forms of price-fixing should be considered illegal per se, as some could potentially benefit consumers or promote competition in certain circumstances. They also disagreed with the majority's view that futures contracts for coffee were subject to regulation under antitrust laws because they did not believe these contracts constituted interstate commerce. Furthermore, they felt there wasn't sufficient evidence presented at trial proving defendants' intent to monopolize or restrain trade within their market. Therefore, according to them, upholding this conviction set a dangerous precedent by expanding federal power over private business practices without clear legislative guidance or constitutional authority.