The United States brought a case against William Linn and others for the illegal sale of public lands. The defendants argued that they had purchased the land from an agent of the government, who was authorized to sell it. However, the Supreme Court ruled in favor of the United States, finding that no such authority existed and thus any sales were invalid. Furthermore, since these sales did not follow proper procedure as outlined by Congress at that time, they could not be recognized as valid transactions under law. This decision set a precedent for future cases involving similar issues regarding unauthorized land sales by agents or representatives of governments or other entities with legal authority over them.

In the case of The United States v. William Linn and Others, the Supreme Court was tasked with determining whether a certain parcel of land in Missouri had been legally acquired by the United States from France as part of the Louisiana Purchase. In an opinion delivered by Justice McLean, it was held that although Congress had not explicitly authorized such a purchase, they did have implied authority to do so under their power to make treaties and acquire territory for public use. This decision was opposed by Chief Justice Taney who argued that since Congress had never expressly given its consent or ratified any treaty concerning this particular piece of land, no valid title could be established in favor of the United States. He further contended that even if there were some evidence suggesting congressional approval for such purchases, it would still be necessary for them to pass specific legislation authorizing each individual transaction before any legal title could be established over disputed lands within U.S borders.