In the United States v. Luskey case in 1922, the Supreme Court ruled on a matter concerning income tax evasion. The defendant, Mr. Luskey, was accused of not including certain profits from his business in his gross income for taxation purposes and thus evading taxes due to the government. He argued that these were capital gains rather than regular income and should therefore be exempted from taxation under existing laws at that time which did not include capital gains as taxable income. The court disagreed with Mr. Luskey's interpretation of what constituted 'income'. It held that profit gained through any form of business operation is considered part of gross income regardless if it is derived from sales or services rendered by an individual or corporation; hence subject to federal tax laws. This ruling clarified how 'gross income' should be defined for taxation purposes and set a precedent for future cases involving similar disputes over what constitutes taxable earnings under U.S law.

In the dissenting opinion for United States v. Luskey, Justice Holmes argued that the majority's decision to uphold a conviction based on evidence obtained through an illegal search and seizure was fundamentally flawed. He contended that such practices violated citizens' Fourth Amendment rights against unreasonable searches and seizures. Holmes emphasized that it is not enough for law enforcement officers to simply believe they have probable cause; they must also be able to demonstrate this belief in court. Furthermore, he pointed out that allowing illegally obtained evidence would incentivize police misconduct by rewarding rather than punishing unconstitutional behavior. In his view, upholding Luskey's conviction under these circumstances undermined both individual liberties and public trust in law enforcement institutions.