Mackey v. United States
Facts
Mackey was indicted in 1963 and convicted in 1964 on five counts of evading payment of income taxes for 1956 through 1960. At trial, the Government used the net worth method and introduced 60 wagering excise tax returns Mackey had filed under 26 U.S.C. § 4401, along with a summary exhibit and testimony showing the wagering figures exceeded the gambling profits reported on his income tax returns. In 1968, after this Court decided Marchetti and Grosso and held that the Fifth Amendment privilege was a valid defense to prosecution for failure to comply with federal gambling tax requirements, Mackey sought collateral relief. He argued that because those returns were compelled within the meaning of the Fifth Amendment, their use at his trial required his conviction to be set aside.
Issue
Whether the rule announced in Marchetti and Grosso applies retroactively on collateral review to invalidate a pre-Marchetti conviction for income tax evasion because wagering excise tax returns filed under the gambling tax statutes were introduced against the defendant at trial.
Rule
Marchetti and Grosso do not apply retroactively on collateral review to set aside a pre-Marchetti conviction that was obtained in conformity with then-controlling law when the use of the compelled wagering tax returns does not cast doubt on the accuracy or reliability of the verdict. New Fifth Amendment rules expanding the privilege against self-incrimination need not be given retroactive effect where their purpose is not to improve the reliability of the fact-finding process.
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