United States v. Jones, 565 U.S. 400

Jones, nightclub owner, investigated for narcotics; GPS device installed on his wife's Jeep in Maryland under a warrant; over 4 weeks, GPS tracked movements and transmitted data; district court suppressed only garage parking data, admitted rest; appellate court reversed; Supreme Court affirmed that GPS attachment and monitoring constitute a search under the Fourth Amendment.
GPS device physically intruded on private property to obtain information about movements; case discusses historical trespass concepts and Katz privacy approach.
Government used GPS data to connect Jones to a drug conspiracy and stash house; trial and sentencing proceeded on the admitted GPS evidence.
Central issue is whether long-term GPS monitoring of a vehicle on public streets is a Fourth Amendment search.
Court’s decision rests on whether the government’s physical intrusion into protected space plus information gathering constitutes a search, regardless of Katz’s privacy standard.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether GPS tracking of a vehicle is a Fourth Amendment search	Jones	Jones's position relies on traditional privacy expectations	Yes, it is a search
Role of trespass vs. privacy tests post-Katz	Knotts/Karo apply but Katz governs privacy	Katz should control; trespass not necessary	Trespass-plus-information approach controls; GPS intrusion amounts to a search
Impact of long-term monitoring on privacy expectations	Societal privacy expectations permit long-term tracking	Privacy expectations may tolerate some surveillance	Long-term GPS monitoring intrudes on reasonable privacy expectations; warrants advised
Concurrence’s critique of the majority’s reasoning	Jostles traditional privacy protection	Views differ on application of Katz vs. trespass	Concurrence would require broader privacy protection; majority affirms decision
Practical implications for warrants and future surveillance	GPS surveillance parallels traditional tracking		Court suggests warrants are available and appropriate for GPS surveillance

Knotts v. United States, 460 U.S. 276 (1983) (beeper location tracking on public roads no search; limited information use)
Karo v. United States, 468 U.S. 705 (1984) (beeper in container; trespass-plus-information analysis; information gathering mattered)
Katz v. United States, 389 U.S. 347 (1967) (privacy protection for persons, not places; expands Fourth Amendment reach)
Olmstead v. United States, 277 U.S. 438 (1928) (wiretap of telephone lines without entering home; privacy concerns evolve)
Soldal v. Cook County, 506 U.S. 56 (1992) (seizure without privacy invasion; physical intrusion context matters)
Alderman v. United States, 394 U.S. 165 (1969) (homeowners’ privacy in conversations; property concepts inform privacy)
California v. Ciraolo, 476 U.S. 207 (1986) (aircraft overflight; public visibility of curtilage matters)
Class v. United States, 475 U.S. 106 (1986) (exterior car examination not a search; relevance of vehicle exterior)