Illinois v. Caballes

Illinois State Trooper Daniel Gillette stopped respondent for speeding on an interstate highway. When Gillette radioed the police dispatcher to report the stop, a second trooper, Craig Graham, a member of the Illinois State Police Drug Interdiction Team, overheard the transmission and immediately headed for the scene with his narcotics-detection dog. When they arrived, respondent’s ear was on the shoulder of the road and respondent was in Gillette’s vehicle. While Gillette was in the process of writing a warning ticket, Graham walked his dog around respondent’s car. The dog alerted at the…