In the case of Royal Packing Company v. United States (1905), the Supreme Court ruled on a dispute involving tariff classification. The Royal Packing Company imported tinned meats from Australia and argued that they should be classified under "provisions" in the Tariff Act, which would result in lower duties than if they were classified as "meat extracts." The U.S. government disagreed with this classification, arguing that these products fell into the category of meat extracts due to their preparation process and thus should be subject to higher tariffs. The court sided with the government's interpretation, noting that while these goods could technically fall under both categories depending on how one interpreted them, it was reasonable for customs officials to classify them as meat extracts given their concentrated nature and method of production. This decision upheld an earlier ruling by a circuit court affirming this categorization. This case is significant because it clarified how certain types of imported goods are categorized for tariff purposes - specifically those where there may be ambiguity or overlap between different potential classifications.

The dissenting opinion in the case of Royal Packing Company v. United States argued that the majority's interpretation of the law was incorrect and overly broad. The dissenting justices believed that, while Congress had indeed given authority to regulate interstate commerce, it did not intend for this power to extend as far as controlling every aspect of a business simply because some part of its operations involved such commerce. They contended that if a company's activities were primarily local with only incidental involvement in interstate trade, then those activities should be considered outside federal jurisdiction. Furthermore, they disagreed with the majority's view on what constituted "direct" versus "indirect" effects on commerce; arguing instead for a more narrow definition where only actions directly affecting prices or quantities could justify federal intervention under Commerce Clause powers.