Whether officers may briefly detain a traveler's luggage on reasonable suspicion that it contains narcotics in order to conduct a limited investigation.
Holding
Yes. Terry principles can permit a brief, properly limited detention of luggage on reasonable, articulable suspicion that it contains narcotics or other contraband.
Reasoning
The Fourth Amendment ordinarily requires probable cause for a seizure of personal property, but Terry permits limited seizures on less than probable cause when the intrusion is sufficiently slight and important governmental interests justify it. The Court applied that same balancing approach to a brief investigative detention of luggage.
The governmental interest was substantial. Drug trafficking through airports is difficult to detect because couriers are mobile, drugs are easily concealed, and organized trafficking can move narcotics rapidly into distribution channels. A brief detention can allow officers to confirm or dispel a grounded suspicion before a traveler and the suspected contraband disappear.
A seizure of property is not equally intrusive in every setting. The burden depends on such factors as whether the owner has immediate possession of the property, whether the inquiry can occur on the spot, and how long the police retain it. Thus, a short detention of luggage for a focused investigation may be less intrusive than the seizure requiring probable cause in the ordinary case.