Whether the Fourth Amendment's Warrant Clause protects a locked footlocker lawfully seized in a public place, or instead protects principally homes and similarly private places.
Holding
Yes. The Warrant Clause protects legitimate privacy interests in personal effects, including locked luggage, even when the effects are outside the home.
Reasoning
The Court rejected the Government's argument that the Warrant Clause applies only to homes and a narrow set of especially private locations. The Fourth Amendment protects people rather than places, and its text protects “persons, houses, papers, and effects” without making the home the exclusive setting in which a warrant is required.
Although the Fourth Amendment was shaped by colonial opposition to general warrants and writs of assistance, that history did not confine the Warrant Clause to home searches. The Clause's purpose is to preserve enduring privacy values, and a neutral magistrate's review helps prevent unjustified or overly broad governmental intrusions wherever they occur.
Respondents showed a substantial expectation of privacy by placing their belongings in a double-locked footlocker. Like sealed mail, locked luggage conceals its contents from public inspection and is a repository for personal effects. Absent an established exception or exigency, officers therefore had to obtain a warrant before examining its contents.