In the case of United States v. Waterhouse et al., 1943, the Supreme Court ruled on a dispute over land ownership in Alaska. The defendants, including Waterhouse and others, claimed that they had purchased lands from Native Alaskans before Alaska was officially recognized as U.S territory. However, according to federal law at that time (the Treaty of Cession), Natives did not have the right to sell their lands without government approval. Therefore, these purchases were deemed invalid by lower courts which prompted an appeal to the Supreme Court. The main issue revolved around whether or not native tribes possessed full rights over their territories prior to American acquisition and if those rights included selling property privately. In its decision, the court upheld previous rulings stating that under international law and specific terms of purchase treaties between Russia and America (Treaty of Cession), indigenous people could only transfer land with governmental consent. Thus it concluded that any private transactions made without such consent were nullified upon American acquisition making all subsequent claims void too. This ruling reinforced Federal authority over territorial acquisitions while also highlighting limitations on indigenous sovereignty during early periods of colonial expansion.

The dissenting opinion in the United States v. Waterhouse et al., 1943 case argued that the majority's decision to uphold a conviction based on evidence obtained through wiretapping was an overreach of federal power and violated the defendants' Fourth Amendment rights against unreasonable searches and seizures. The dissent contended that wiretapping constituted an invasion of privacy, regardless of whether it occurred with or without trespassing onto private property. Moreover, they believed this ruling set a dangerous precedent for future cases by allowing law enforcement agencies to use invasive surveillance methods without proper checks and balances. They also expressed concern about potential abuses of power if such practices were left unchecked.