What happened
The Seventh Circuit revived Ausencio Martinez's Fourth Amendment challenge to a semitruck search, reversing a district court order that had refused to suppress cocaine found after an Illinois trooper stopped the truck under the state's commercial-vehicle inspection regime.
The panel said an officer's purpose can matter when the government relies on the administrative-inspection exception rather than an observed traffic violation or probable cause of criminal activity. In that setting, the court said, an officer's "actual motivations" for conducting an inspection can invalidate otherwise justifiable conduct.
Martinez had conditionally pled guilty to possessing with intent to distribute cocaine and received a 120-month prison sentence while preserving his right to appeal the suppression ruling. The Seventh Circuit reversed and remanded, leaving further proceedings to the district court.
The stop followed a law enforcement tip that a semitruck was transporting narcotics. Trooper Anthony Muzzillo, an Illinois State Police K9 handler, stopped Martinez's truck on Interstate 57 for what was described as a Level 3 administrative inspection, then conducted a dog sniff that led to a search and the discovery of suspected narcotics.
The opinion said commercial trucking is a pervasively regulated industry, but that does not end the Fourth Amendment inquiry. Warrantless administrative inspections must still be reasonable, and the administrative-inspection exception does not apply when the inspection is used as a pretext for the sole purpose of investigating criminal activity.
A dissent would have upheld the search, saying the trooper was authorized to conduct the inspection, followed proper procedure and later developed reasonable suspicion before the dog sniff based on the truck's route deviation, air-freshener odor, Martinez's nervousness and a missing trailer seal.