Whether a federal marshal's warrantless search of Weeks's home and seizure of his private letters violated the Fourth Amendment.
Holding
Yes. The marshal's entry into Weeks's home and seizure of his private correspondence without a warrant violated the Fourth Amendment.
Reasoning
The Fourth Amendment protects people, including those accused of crimes, in their persons, houses, papers, and effects against unreasonable governmental searches and seizures. Its historical purpose was to reject general-warrant practices and to secure the principle that a person's home is protected from unjustified official intrusion.
The marshal acted under color of federal office and entered Weeks's home to obtain additional evidence for the prosecution. He had neither a warrant for Weeks's arrest nor a warrant authorizing a search of the premises, supported by oath and particularly describing the place and things to be searched for.
This was not a lawful search incident to arrest, nor a case involving evidence lawfully discovered while officers executed a valid warrant. It was a direct, warrantless invasion of a home and seizure of private letters for evidentiary use. Even a court order could not have justified such a search without the constitutional prerequisites of sworn probable cause and particularity.