In the United States v. Quinn case of 1985, the Supreme Court ruled on a matter involving tax evasion and fraud. The defendant, James B. Quinn, was charged with evading federal income taxes by concealing his assets through various means such as using false names and addresses for bank accounts and transferring property to family members without their knowledge or consent. He was also accused of making fraudulent statements to IRS agents during their investigation into his financial affairs. The court found that there was sufficient evidence to convict Quinn on all counts despite his claims that he had been denied due process because some documents used in trial were obtained illegally from him under duress while he was hospitalized following a suicide attempt. Quinn's conviction upheld by the Supreme Court included multiple counts of tax evasion, conspiracy to defraud the United States government, obstruction of justice and perjury before a grand jury.

The dissenting opinion in the United States v. Quinn case argued that the majority's decision to uphold a warrantless search of an individual's home based on third-party consent was not consistent with Fourth Amendment protections against unreasonable searches and seizures. The dissent contended that such a ruling could potentially lead to abuses by law enforcement, as it would allow them to bypass obtaining a warrant if they can secure consent from someone other than the homeowner or occupant. They also expressed concern about potential violations of privacy rights, particularly for individuals who share living spaces with others but still have an expectation of privacy within their own rooms or areas. Furthermore, they disagreed with the majority’s view that co-occupants possess common authority over shared premises sufficient enough to give valid consent for searches without any specific evidence supporting this claim.