United States v. Swift & Co.

Background

In 1920 the Government sued the five leading meat packers (including Swift and Armour) under the Sherman Act and, by agreement, a court order prohibited them from keeping a monopoly and from dealing in many listed food products and from selling meat at retail. Years later Swift and Armour asked the court to modify that order so they could sell groceries at wholesale and use their distribution facilities for other foods.

Reasoning

The Supreme Court explained that a court may change a continuing injunction when conditions truly change. But here the packers had once abused their market power, could still use their large scale and refrigerated facilities to distribute groceries with little extra cost, and had a history suggesting the temptation to undercut rivals. The Court found the changed conditions were not clearly sufficient to remove the danger the 1920 order aimed to prevent. On that basis the Court reversed the lower court’s modification and dismissed the petitions to relax the injunction.

Real world impact

The decision keeps in place strict limits on the largest packers’ ability to move into grocery sales and to use their distribution advantages to pressure smaller grocers. It upholds the old court order entered by agreement and emphasizes that mere convenience or business advantage is not enough to undo long‑standing restraints designed to protect competitors and market fairness.

Dissents or concurrances

Justice Butler dissented, arguing the evidence showed active competition and changed industry conditions, and he would have left the modification in place to allow more efficient distribution and lower costs.