John Marshall Harlan II,
Marchetti v. United States — Opinion of the Court
“ We emphasize that we do not hold that these wagering tax provisions are as such constitutionally impermissible; we hold only that those who properly assert the constitutional privilege as to these provisions may not be criminally punished for failure to comply with their requirements. If, in different circumstances, a taxpayer is not confronted by substantial hazards of self-incrimination, or if he is otherwise outside the privilege's protection, nothing we decide today would shield him from the various penalties prescribed by the wagering tax statutes. ”
