In the United States v. Manzi case of 1927, the Supreme Court ruled on an issue related to tax evasion and fraud. The defendant, Joseph Manzi, was charged with attempting to defraud the government by not paying taxes on his income from illegal alcohol sales during Prohibition. He argued that he could not be prosecuted for this because it would violate his Fifth Amendment right against self-incrimination; if he reported this income on his tax return, he would essentially be admitting to a crime (illegal sale of alcohol). However, the Supreme Court disagreed with Manzi's argument. They held that filing a false or fraudulent return is itself a criminal act separate from any underlying illegal activity generating income. Therefore, prosecution for such an act does not infringe upon Fifth Amendment rights as it doesn't force admission of another crime but rather punishes deception in reporting taxable earnings.

In the dissenting opinion for United States v. Manzi, Justice Oliver Wendell Holmes Jr. argued that the defendant's conviction should be overturned because he was not given a fair trial due to prosecutorial misconduct. He believed that the prosecutor had improperly influenced the jury by introducing evidence of crimes unrelated to those charged in order to create prejudice against Manzi and sway their decision-making process. Furthermore, he contended that this kind of behavior from prosecutors undermines public confidence in our justice system and violates defendants' constitutional rights to a fair trial. Therefore, even though there may have been sufficient evidence for a conviction without these tactics, it is essential for courts to ensure trials are conducted fairly and impartially regardless of guilt or innocence.