In Illinois v. Caballes, a marijuana prosecution, the Supreme Court held that a trained drug dog's exterior sniff during an otherwise lawful traffic stop did not violate the Fourth Amendment without separate suspicion of drug activity. The decision accepted that the stop had not been improperly prolonged; it did not authorise extending a traffic detention simply to conduct a sniff.[1]
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References
- US Supreme Court — Illinois v. Caballes, 543 U.S. 405 (2005), opinion reproduced by Cornell LIIOpinion of the Court, facts and discussion of the duration of the stoparchived
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