United States v. Labs: Reasonable Suspicion at the “Rodriguez Moment” Validates a Canine-Related Extension of a Traffic Stop; § 922(g)(1) Challenge Foreclosed by Circuit Precedent

Introduction

In United States v. Labs (10th Cir. Feb. 27, 2026) (nonprecedential “Order and Judgment”), the Tenth Circuit affirmed the District of Colorado’s denial of two motions filed by defendant-appellant Ryan Labs after a traffic stop in Berthoud, Colorado. The government, United States of America, charged Labs with one count of being a felon in possession of a firearm and ammunition under 18 U.S.C. § 922(g)(1).

The appeal presented two recurring federal criminal issues:

  1. Fourth Amendment: Whether the officer unlawfully prolonged a traffic stop by requesting a canine sniff without independent reasonable suspicion at the relevant “Rodriguez moment,” and whether the ensuing wait for the dog was unreasonable.
  2. Second Amendment: Whether § 922(g)(1) is unconstitutional (facially and as applied) under New York State Rifle & Pistol Ass'n, Inc. v. Bruen.

Labs entered a conditional guilty plea preserving these issues for appeal and received a 30-month sentence followed by three years of supervised release.

Summary of the Opinion

The Tenth Circuit affirmed on both issues.

  • Suppression: The court agreed that, at the time the officer requested a canine unit, the totality of the circumstances supported reasonable suspicion of drug-related activity. Because reasonable suspicion existed and did not dissipate, the officer could extend the stop, and the ~20–30 minute interval until the canine arrived and alerted was not an unreasonable prolongation under Tenth Circuit precedent.
  • Second Amendment: Labs conceded that Vincent v. Bondi foreclosed his § 922(g)(1) challenge in the Tenth Circuit, so the court affirmed the denial of the motion to dismiss for preservation purposes.

As an “Order and Judgment,” the disposition is not binding precedent except under law-of-the-case, res judicata, and collateral estoppel doctrines, though it may be cited for persuasive value under the circuit rules.

Analysis

Precedents Cited

1) Standards of review and deference

  • United States v. Mayville: Provided the familiar appellate framework—facts are viewed in the government’s favor, factual findings are accepted unless clearly erroneous, and the ultimate Fourth Amendment reasonableness question is reviewed de novo. This set the posture for reviewing the district court’s reasonable-suspicion determination.
  • United States v. McGregor: Defined “clearly erroneous” and reinforced deference to trained officers’ ability to distinguish innocent from suspicious actions. The panel relied on this lens when crediting the district court’s factual findings and giving weight to the officer’s inferences from the circumstances (time, location, behavior).

2) Prolongation doctrine: the Rodriguez framework and the “Rodriguez moment”

  • Rodriguez v. United States: The constitutional anchor. The opinion treated Rodriguez as establishing the governing rule: extending a stop to investigate “ordinary criminal conduct” is unlawful unless supported by independent reasonable suspicion.
  • United States v. Baker: Supplied the opinion’s operational three-part test for an unlawful prolongation: (1) diversion from the traffic mission, (2) in a way that adds time, and (3) without independent reasonable suspicion. Baker also contributed a crucial clarification later used to reject Labs’s “wait time” argument—once reasonable suspicion exists, “[a]n officer can always prolong a traffic stop” to investigate that wrongdoing (quoted in Baker’s footnote).
  • United States v. Frazier: Provided the analytic tool of identifying the “Rodriguez moment” (the point at which the stop is extended by non-traffic inquiries). Frazier also supplied the rule that later-arising facts cannot retroactively justify a seizure if reasonable suspicion was lacking at that moment. The panel applied this structure by focusing on whether suspicion existed when the canine was requested.

3) Reasonable suspicion: totality of the circumstances and aggregation of factors

  • United States v. Munoz: Furnished the opinion’s definition of reasonable suspicion as a “particularized and objective basis” under the totality of circumstances, and cautioned against “divide-and-conquer” analysis. The panel used Munoz to justify aggregating multiple facts—tip-like intelligence from another officer, location, timing, and driving behavior—none necessarily dispositive alone.
  • United States v. Lopez: Reinforced that reasonable suspicion may rest on a combination of factors each susceptible to innocent explanation. This supported the court’s conclusion that factors such as a late-night stop on a minor road and a brief entry/exit from a known drug area can contribute to suspicion when combined with other information.

4) Specific factors supporting reasonable suspicion

  • United States v. Villa-Chaparro: Played two roles. First, it supported treating a driver’s failure to promptly stop after police lights as a suspicious factor. Second, it served as a time benchmark: detentions involving a canine wait (there, an additional thirty-eight minutes) can be reasonable when supported by reasonable suspicion.
  • United States v. McHugh: Supported considering the late-night timing as a factor that can contribute to reasonable suspicion.

5) Persistence (non-dissipation) of reasonable suspicion during continued detention

  • United States v. Campbell: Supplied the formulation that continued detention may be justified “so long as reasonable suspicion is not clearly refuted.” The panel used this to answer Labs’s contention that the stop became unreasonable because no new incriminating facts were gained while waiting.
  • Amundsen v. Jones: Supported the idea that suspicion can reasonably persist through investigative steps even if a suspect’s behavior during the stop does not add further evidence. The opinion analogized this to the canine wait: reasonable suspicion need not be continuously “reconfirmed” by new facts.

6) Second Amendment / § 922(g)(1) challenges after Bruen

  • New York State Rifle & Pistol Ass'n, Inc. v. Bruen: Identified as the governing Supreme Court framework for evaluating Second Amendment restrictions via text-and-history analysis. The district court conducted its own Bruen analysis.
  • Vincent v. Garland (vacated): The district court cited it, but the opinion noted its vacatur, limiting its continuing force. Its presence matters mainly as part of the lower court’s reasoning history rather than as controlling law.
  • United States v. McCane: Cited as prior Tenth Circuit authority upholding felon-in-possession restrictions, historically important to the circuit’s posture on § 922(g)(1).
  • Vincent v. Bondi: The dispositive precedent on appeal. Labs conceded it foreclosed his Bruen-based challenge, and the panel affirmed on that basis.

Legal Reasoning

1) Locating the critical moment and asking the right question

The panel adopted the district court’s identification of the “Rodriguez moment” as the time Deputy Napolitano requested the canine. Under Rodriguez v. United States and United States v. Frazier, the constitutional inquiry becomes: Did the officer have independent reasonable suspicion at that moment? If yes, the investigative extension is permissible.

2) Totality-of-the-circumstances reasonable suspicion existed when the canine was requested

The decision emphasized that suspicion was “based largely” on information relayed by another officer: Sergeant Thiemann’s statement that Ms. Dillon had “recent intel for distributing fentanyl and meth.” The panel then added corroborative circumstances observed by Deputy Napolitano:

  • Driving behavior: she drove roughly 500 yards before pulling over (supported by United States v. Villa-Chaparro).
  • Context: it was late at night on a minor road (supported by United States v. McHugh).
  • Location pattern: she pulled into and quickly left Love’s Travel Center, which the deputy knew as a “hot bed of drug dealing.”

Critically, the panel avoided relying on a contested factual point—whether Ms. Dillon lied about being at Love’s—because “the record is unclear.” This shows the court narrowing its reasonable-suspicion analysis to supported facts while still finding the remaining combination sufficient under United States v. Munoz and United States v. Lopez.

3) The wait for the canine did not render the detention unreasonable once reasonable suspicion existed

Labs reframed the issue: even if suspicion existed, the stop should have ended once the “original purpose” was resolved and no new facts emerged. The panel rejected this in two steps:

  1. Doctrinal step: If reasonable suspicion exists and has not dissipated, extension is permissible (citing United States v. Baker and United States v. Campbell), and suspicion need not be bolstered by new facts during the continued detention (analogizing to Amundsen v. Jones).
  2. Temporal step: The roughly 20–30 minute delay between developing reasonable suspicion and the canine’s arrival/alert fell within times previously upheld in the circuit, particularly United States v. Villa-Chaparro.

4) Second Amendment claim disposed of by binding circuit precedent

On the motion to dismiss, the court did not revisit the Bruen merits because Labs conceded that Vincent v. Bondi “forecloses” his argument. The court therefore affirmed, noting the issue was raised only for preservation.

Impact

1) Fourth Amendment traffic-stop practice in the Tenth Circuit

Although nonprecedential, the disposition is a clear application of established Tenth Circuit doctrine: (a) pinpoint the “Rodriguez moment,” (b) assess reasonable suspicion at that time under the totality of the circumstances, and (c) treat a canine wait of tens of minutes as permissible if suspicion exists and does not dissipate. The opinion also illustrates that courts may find reasonable suspicion without relying on every asserted factor—contested facts can be excluded while the remaining mosaic still suffices.

2) Continued stability of § 922(g)(1) litigation posture

The decision reinforces that, within the Tenth Circuit, Vincent v. Bondi is controlling on Bruen-based challenges to § 922(g)(1) (at least unless and until higher court review changes the governing law). Practically, defendants raising felon-in-possession Second Amendment challenges in this circuit should expect dismissal absent an intervening Supreme Court or en banc development.

Complex Concepts Simplified

  • “Rodriguez moment”: The point in a traffic stop when police stop doing traffic-related tasks and instead begin (or add) investigative steps aimed at ordinary criminal wrongdoing that extend the stop (e.g., requesting a canine to sniff for drugs). Reasonable suspicion must exist at that moment.
  • Reasonable suspicion: A lower standard than probable cause. It requires specific, articulable facts that, taken together, create an objective basis to suspect criminal activity. It can arise from multiple small factors that may each have innocent explanations.
  • Canine sniff and “prolongation”: A dog sniff becomes problematic when it adds time to a stop beyond the traffic mission without independent reasonable suspicion. If reasonable suspicion exists, the officer may extend the stop to investigate.
  • Facial vs. as-applied constitutional challenge: A facial challenge argues a law is unconstitutional in all its applications; an as-applied challenge argues it is unconstitutional as applied to a particular defendant’s circumstances.
  • Vacated decision: When a case is “vacated,” it is set aside; it generally loses its binding force as precedent, which is why the opinion’s operative Second Amendment analysis turned instead on Vincent v. Bondi.

Conclusion

United States v. Labs affirms two points of practical importance. First, under the Rodriguez/Baker/Frazier framework, a traffic stop may be extended for a canine sniff when independent reasonable suspicion exists at the time the canine is requested, assessed under the totality of circumstances, and the resulting wait is not unreasonable where suspicion persists and circuit precedent tolerates comparable delays. Second, in the Tenth Circuit, Bruen-based challenges to § 922(g)(1) remain foreclosed by Vincent v. Bondi, leaving defendants to preserve the issue for potential higher-court review.