In the United States v. Borden Company et al., 1953, the Supreme Court ruled on a case involving alleged price-fixing in the dairy industry. The government accused several major dairies of conspiring to fix prices for milk sold in Illinois and Wisconsin, violating antitrust laws under Sherman Act. However, these companies argued that they were exempt from such laws due to provisions within the Agricultural Marketing Agreement Act (AMAA) which allowed them to set minimum prices for their products. The court had to determine whether this exemption applied even when it led to anti-competitive practices. The Supreme Court sided with the government's argument and held that while AMAA did allow agricultural producers certain exemptions from antitrust legislation, it did not extend so far as permitting outright price fixing or other monopolistic behaviors among distributors who were not themselves farmers or cooperatives owned by farmers. Therefore, these large commercial dairies could be prosecuted under federal antitrust law despite any protections offered by AMAA.

In the dissenting opinion for United States v. Borden Company et al., Justice Robert H. Jackson disagreed with the majority's interpretation of the Sherman Act, arguing that it was not intended to prohibit all price-fixing agreements in every circumstance. He contended that Congress did not intend to make illegal any agreement affecting prices, regardless of its purpose or effect on competition and without regard to reasonableness. Instead, he believed that only those agreements which unreasonably restrain trade were meant to be prohibited by this law. Furthermore, he argued against applying a per se rule (a legal shortcut) declaring all price-fixing schemes as automatically unlawful under antitrust laws because such an approach oversimplifies complex economic realities and ignores potential justifications for these arrangements based on market conditions or business necessities.