Illinois v. Caballes (full text)
U.S. Supreme Court
Illinois v. Caballes, 125 S. Ct. 834 (2005).
Decided January 24, 2005
Issue: The Fourth Amendment as applied to
dog sniffs during traffic stops
Holding: Even without probable cause to believe the defendant possessed narcotics, a dog sniff conducted during a traffic stop did not violate defendant's Fourth Amendment rights because the stop was lawful at its inception and otherwise executed in a reasonable manner.
Summary:
An Illinois state trooper stopped Caballes for speeding and
radioed the police dispatcher to report the stop. A second trooper
overheard the transmission and drove to the scene with his
narcotics-detection dog. While the first trooper wrote Caballes a
warning, the second trooper walked his dog around Caballes' car.
The dog alerted at the trunk, and the officers searched the trunk
and found marijuana. Caballes was arrested charged with a
narcotics offense.
Caballes moved to suppress the seized evidence and to quash his
arrest. The trial court denied the motion, and Caballes was
convicted. The Appellate Court affirmed, and the Illinois Supreme
Court reversed on the grounds that the dog sniff transformed a
routine traffic stop into a drug investigation without
justification.
The U.S. Supreme Court held that a justifiable seizure can
become unlawful if it is prolonged beyond the time reasonably
required to complete its goal. Here, though, the duration of the
stop was entirely justified by the traffic offense, considering
that the second officer arrived with the dog and the sniff was
conducted during the time it took the first officer to conduct the
traffic stop and write the warning ticket.
Further, the dog sniff did not infringe the defendant's
constitutionally protected interest in privacy, because it only
revealed the presence of contraband that no citizen has the legal
right to possess.