United States v. Jones
Citation: 565 U.S. 400 (2012) Court: Supreme Court of the United States
Facts
Federal agents and local police obtained a warrant to attach a GPS tracking device to a vehicle registered to Antoine Jones’s wife, but they installed the device after the warrant had expired and outside the authorized geographic area. The device tracked Jones’s movements for 28 days, generating approximately 2,000 pages of location data that the government used to connect Jones to a drug stash house. Jones was convicted of conspiracy to distribute cocaine; he challenged the warrantless GPS surveillance as an unconstitutional search.
Issue
Whether the government’s attachment of a GPS device to a vehicle and long-term monitoring of its movements constitutes a “search” within the meaning of the Fourth Amendment.
Holding
Attaching a GPS device to a vehicle and using it to monitor the vehicle’s movements constitutes a Fourth Amendment search because it involves a physical trespass onto a constitutionally protected area (the vehicle) for the purpose of obtaining information.
Rule
The government conducts a Fourth Amendment search when it physically intrudes upon a constitutionally protected area (person, house, paper, or effect) to obtain information; the Katz reasonable-expectation-of-privacy test supplements but does not displace this common-law trespassory approach.
Significance
Jones reaffirmed the property-based (trespassory) approach to Fourth Amendment analysis, which had been largely overshadowed by the Katz reasonable-expectation-of-privacy framework since 1967. The five-justice majority opinion by Scalia avoided the harder question of whether long-term surveillance alone violates the Fourth Amendment. Justice Alito’s concurrence (joined by four justices) argued that prolonged GPS monitoring violates reasonable expectations of privacy even absent physical trespass, planting seeds for future doctrine. Justice Sotomayor’s solo concurrence questioned whether the third-party doctrine should apply to digital-age location data — a question the Court later took up in United States v. Carpenter. Jones is a landmark in the Court’s evolving approach to digital surveillance and Fourth Amendment protection for location information.