by Douglas Ankney

The United States Court of Appeals for the Seventh Circuit held that a court may examine an individual officer’s subjective purpose in assessing whether a warrantless administrative inspection was a pretext for a criminal investigation, rejecting the Government’s contention that such inquiries are confined to the programmatic level. The Court announced that the Government must establish both that the regulatory scheme is reasonable under New York v. Burger, 482 U.S. 691 (1987), and that the officer’s purpose was not pretextual. It determined that the trooper’s sole motivation was to conduct a criminal investigation, that the good-faith exception did not apply, and reversed.

Background

Early on October 7, 2021, Illinois State Police Trooper Anthony Muzzillo was summoned to help another law enforcement agency that had received a tip about a semitruck hauling narcotics on Interstate 57. Muzzillo, a K9 handler, was not on routine patrol. He enlisted a second K9 handler, and the two waited at least 30 minutes alongside the interstate. At 3:16 a.m., Muzzillo located the semitruck and pulled it over for a Level 3 administrative inspection under Illinois’s commercial trucking regulatory scheme. After questioning the defendant, Ausencio Martinez, and reviewing his paperwork, Muzzillo walked his K9 around the outside of the truck. The dog alerted, a member of the tipping agency requested a search, and Muzzillo found a duffel bag of narcotics.

A grand jury indicted Martinez for possessing with intent to distribute five kilograms or more of cocaine. 21 U.S.C. § 841(a)(1), (b)(1)(A). Martinez moved to suppress, arguing that Muzzillo had used the administrative inspection statute as a pretext and had unreasonably prolonged the stop. The U.S. District Court for the Central District of Illinois denied the motion, reasoning that City of Indianapolis v. Edmond, 531 U.S. 32 (2000), and United States v. Villamonte-Marquez, 462 U.S. 579 (1983), barred challenges to the subjective intent of the officer conducting an administrative stop. Martinez pleaded guilty conditionally, received 120 months’ imprisonment, and timely appealed.

Analysis

The Court began its analysis by reviewing the Fourth Amendment standards governing traffic stops. A traffic stop is a seizure that must be reasonable and “justified at its inception.” Whren v. United States, 517 U.S. 806 (1996); United States v. Cole, 21 F.4th 421 (7th Cir. 2021) (en banc). Reasonableness is ordinarily “predominantly an objective inquiry,” and conduct supported by individualized suspicion is reasonable “whatever the subjective intent” motivating the officer, the Court observed. Ashcroft v. al-Kidd, 563 U.S. 731 (2011). The Government did not rely on an observed violation or probable cause but on Illinois’ commercial trucking regulatory scheme.

The Court stated that warrantless inspections conducted under an administrative scheme are not automatically unconstitutional, City of Los Angeles v. Patel, 576 U.S. 409 (2015), and the Seventh Circuit has recognized commercial trucking as a pervasively regulated industry. Owner-Operator Independent Drivers Ass’n v. U.S. Department of Transportation, 840 F.3d 879 (7th Cir. 2016). Such inspections must still be reasonable, and they may not be used as a pretext for gathering evidence of criminal activity. Whren; Burger. Administrative inspections are accordingly one of only two settings in which the Supreme Court has treated officers’ “actual motivations” as consequential, the Court explained. al-Kidd.

In Burger, the Supreme Court assessed pretext on two levels: (1) whether the enacting legislature acted from genuine regulatory motives and (2) whether the officers’ inspection was “truly” made pursuant to the scheme. In the present case, the Court concluded that where the evidence sufficiently shows that an officer inspected not to advance the regulatory scheme but solely as a cover for investigating crime, the exception does not apply. Sister circuits have reached the same conclusion, the Court observed. See, e.g., United States v. Orozco, 858 F.3d 1204 (9th Cir. 2017) (nearly identical facts; facially valid scheme did not save pretextual stop); Bruce v. Beary, 498 F.3d 1232 (11th Cir. 2007) (officer’s intent testimony may evidence illegal pretext); United States v. Johnson, 994 F.2d 740 (10th Cir. 1993); cf. United States v. Johnson, 889 F.3d 1120 (9th Cir. 2018) (Paez, J., concurring) (collecting decisions from six circuits).

The Government’s Reliance on Edmond and Brigham City

The Court then turned to the Government’s contention that two decisions foreclose an officer-level inquiry. Edmond, a checkpoint case, cautioned that the purpose inquiry “in this context” belongs “only at the programmatic level and is not an invitation to probe the minds of individual officers acting at the scene.” Brigham City v. Stuart, 547 U.S. 398 (2006), held that an officer’s subjective intent is irrelevant to the exigent circumstances exception. Neither decision involved special needs or administrative inspections, both limited exceptions to the objective reasonableness inquiry, the Court reasoned. al-Kidd. Edmond’s caution was tied to the checkpoint setting and disclaimed any intention to alter earlier administrative inspection jurisprudence; Brigham City neither discussed nor modified that inquiry. Later decisions confirm the continuing vitality of such inquiries, according to the Court. al-Kidd; Kentucky v. King, 563 U.S. 452 (2011); Fernandez v. California, 571 U.S. 292 (2014). The Court also distinguished Villamonte-Marquez, where the maritime documentation laws served both administrative and criminal enforcement interests.

Application to the Facts

The Court announced that, to establish a stop justified at its inception, the Government must show both that the regulatory scheme satisfies Burger and that the officer’s purpose was not pretextual. Burger asks whether a substantial governmental interest informs the regulatory scheme, warrantless inspections are necessary to further it, and the scheme provides a constitutionally adequate substitute for a warrant. The Government bears the burden of establishing a warrantless search’s reasonableness. United States v. Dixon, 137 F.4th 592 (7th Cir. 2025). If the officer’s sole purpose was to obtain evidence of criminal activity, the administrative-inspection exception would not apply. Because Muzzillo initiated the stop without individualized suspicion of wrongdoing, the stop was unreasonable, according to the Court. It declined to hold pretext irrelevant where a scheme serves multiple goals, observing only that where a scheme serves solely noncriminal ends, an inspection motivated only by the desire to find evidence of criminal activity “is more obviously pretextual.” Because Martinez did not attack Illinois’ scheme, the Court accepted, without deciding, that the Illinois Motor Carrier Safety Law, 625 Ill. Comp. Stat. 5/18b-100 et seq., satisfies Burger.

Whether an inspection is pretext is a question of fact, resolved on the whole record. United States v. Johnson, 994 F.2d 740 (10th Cir. 1993). The Court determined that the record showed a joint operation in which two K9 troopers were summoned in the middle of the night to help pursue another agency’s narcotics tip. Muzzillo testified that he stopped the semitruck because he had received information that it was “possibly carrying large-load narcotics,” and no evidence indicated that he would have been patrolling or would have stopped Martinez absent that tip. The Court noted that the Government had never provided any regulatory rationale for the stop or separated the criminal investigation from the asserted inspection. Muzzillo had invoked the scheme only as a means of circumventing the warrant requirement, and the District Court’s apparent contrary finding was clearly erroneous, the Court ruled.

Conclusion

Accordingly, the Court reversed the denial of Martinez’s motion to suppress and remanded, without reaching his argument that the dog sniff unreasonably prolonged the stop. See: United States v. Martinez, 180 F.4th 991 (7th Cir. 2026).  

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