Whether a statute that compels a claimant to produce private papers for use in a revenue-forfeiture proceeding, on pain that the government's allegations will be treated as confessed, violates the Fourth Amendment.
Holding
Yes. The compulsory production of private papers for use to establish a forfeiture is the equivalent of an unreasonable search and seizure and violates the Fourth Amendment.
Reasoning
The statute did not authorize officers physically to enter a home or seize documents. But its consequence for noncompliance—treating the government's allegations as confessed—made production effectively compulsory. The Court therefore looked to the substance of the demand, not its less intrusive procedural form: it forced the claimant to furnish private papers that the government could inspect and introduce against him.
The Court distinguished permissible seizures of contraband, stolen goods, dutiable goods concealed from revenue officers, and property subject to attachment or execution. In those settings, the government or another party has a recognized possessory interest in the property, or the seizure implements a civil judgment. By contrast, the government had no right to possess Boyd's private invoice; it sought the paper solely for the information it contained and to prove wrongdoing by its owner.
Drawing on the history of writs of assistance and Lord Camden's decision in Entick v. Carrington, the Court treated private papers as especially protected possessions. The Fourth Amendment was adopted against governmental practices that searched for and carried away papers to discover evidence of offenses. Its protection therefore reaches the compelled extraction of a person's papers for evidentiary use, even without the physical breaking of doors or rummaging through drawers.
Constitutional protections for personal security and property must receive a liberal construction. The Court warned that unconstitutional practices often begin with indirect or seemingly modest departures from established legal safeguards. A statutory device that accomplishes the essential objective of an unlawful paper search cannot be saved merely because it proceeds through a court order rather than a physical search warrant.