License-Plate Readers Are Not a Fourth Amendment “Search” When They Provide Only Periodic Public-Road Location Hits; Fifth Circuit Reaffirms § 922(o) Survives Bruen Under Hollis/Wilson

1. Introduction

United States v. Porter arose from a January 2024 traffic stop in Gautier, Mississippi, after Officer Charles Hoggard received an alert that a license plate reader at a particular intersection captured a plate associated with Elijah Porter, who reportedly had an outstanding aggravated-assault warrant. After stopping the vehicle and detaining Porter, Hoggard ultimately recovered a Glock pistol with a “little silver switch on the back”—an automatic “Glock switch” (a machinegun conversion device). Porter was charged with possession of a machinegun under 18 U.S.C. § 922(o).

On appeal, Porter pressed two major sets of issues:

• Fourth Amendment: (a) whether LPR-derived location data is a “search” requiring a warrant; (b) whether the stop lacked reasonable suspicion; and (c) whether the firearm/switch should be suppressed because it was not in plain view and was not discovered in a lawful inventory search.
• Second Amendment: whether § 922(o) is unconstitutional, facially or as applied, after New York State Rifle & Pistol Ass'n, Inc. v. Bruen.

The Fifth Circuit affirmed across the board, making the decision especially significant for (i) LPR technology litigation and (ii) the post-Bruen durability of machinegun restrictions in the Fifth Circuit.

2. Summary of the Opinion

The court held that the LPR system’s collection/use of periodic “hits” reflecting a vehicle’s presence at specific public intersections did not intrude upon a reasonable expectation of privacy and therefore did not constitute a Fourth Amendment search; no warrant was required. The court also held the traffic stop was supported by reasonable suspicion based on the ALPR/BOLO information regarding an outstanding warrant, and that the Glock and machinegun conversion switch were validly seized under the plain-view doctrine. Finally, the court rejected the Second Amendment challenge because circuit precedent—Hollis v. Lynch, as recently reaffirmed in United States v. Wilson—forecloses the claim that machineguns are protected “arms” under the Second Amendment.

3. Analysis

3.1 Precedents Cited (and How They Drove the Result)

A. Standards of review and video evidence

• United States v. Gomez (review of factual findings for clear error; legal conclusions de novo) and United States v. Garcia (evidence viewed in light most favorable to Government) framed an appellate posture strongly deferential to the district court on contested suppression facts.
• United States v. Alvarez (uphold if any reasonable view supports) and United States v. Jefferson (enhanced deference when denial rests on live testimony) underwrote the panel’s reluctance to second-guess credibility findings about what the officer saw.
• United States v. Anderson, drawing from Scott v. Harris, set the rule that courts follow the “facts in the light depicted by the videotape” when video clearly contradicts testimony, while Aguirre v. City of San Antonio limited that principle where video is “ambiguous.” This became pivotal: the panel treated the bodycam as ambiguous as to whether the gun/switch were visible prior to retrieval, preserving the district court’s crediting of the officer’s “plain view” testimony.

B. Fourth Amendment: LPR hits vs. comprehensive tracking

• United States v. Smith (Fifth Circuit geofence decision) and Carpenter v. United States supplied the modern framework: some location tracking can be a search when it reveals the “whole of [one’s] physical movements,” including into private spaces, and when retroactive collection sweeps broadly.
• United States v. Knotts supplied the counterweight: no reasonable expectation of privacy in movements “from one place to another” on public thoroughfares; technological enhancement that essentially follows a car on public roads does not necessarily become a search.
• Olabisiomotosho v. City of Houston added a “license plate” gloss—“[a] motorist has no privacy interest in their license plate number”—supporting the court’s view that LPR scanning of publicly displayed plates at public intersections is closer to ordinary observation (or Knotts-type augmentation) than to Carpenter-type comprehensive surveillance.

C. Reasonable suspicion for the stop based on ALPR/BOLO warrant information

• United States v. Henry and United States v. Brigham provided the general “reasonableness” touchstone for Fourth Amendment stops.
• United States v. Hensley supplied the key rule: reasonable suspicion can justify a Terry-type investigatory stop to investigate a completed felony/wanted person.
• United States v. Ochoa and United States v. Alvarez supported reliance on information “issued through police channels” and the collective-knowledge principle that the stopping officer need not personally know all underlying facts if police communications are grounded in articulable facts.
• United States v. Gonzalez (citing Alabama v. White) provided the factors for assessing a BOLO’s credibility and reliability (specificity, verifiability, staleness). The panel emphasized that the report specified the vehicle, could be verified, and concerned an active warrant later confirmed valid.
• Kansas v. Glover supplied the proposition that reasonable suspicion “falls considerably short” of 51% accuracy, and Heien v. North Carolina reinforced that reasonableness does not require perfection—both supporting the conclusion that lack of a driver description did not defeat reasonable suspicion where the car and warrant information were specific.

D. Plain view (and why the gun/switch was not suppressed)

• United States v. Rodriguez (citing Horton v. California) supplied the elements of plain view: lawful presence, item in plain view, immediately apparent incriminating nature, and lawful right of access.
• United States v. Gibbs reinforced deference to the trial judge’s credibility assessments, which the panel leaned on heavily to accept the officer’s testimony that the barrel and switch were visible.
• United States v. Riggins supported the move that bodycam footage not clearly showing an item does not “plainly contradict” a district court’s finding that an officer saw it in plain view.
• The out-of-circuit district court cases (United States v. Stuckey; United States v. Gray; United States v. Rowson) were used for a practical proposition: body cameras may miss what officers see at eye level due to angle and framing.

E. Facial/as-applied challenges and § 922(o) after Bruen

• United States v. Howard supplied de novo review for preserved constitutional challenges.
• Ostrewich v. Tatum, United States v. Diaz (quoting United States v. Salerno) framed the facial/as-applied structure: as-applied first; facial invalidation requires “no set of circumstances” under which the statute is valid.
• Hollis v. Lynch supplied the dispositive rule: machineguns “do not receive Second Amendment protection” as “dangerous and unusual” and not “in common use.”
• United States v. Wilson (2026) was treated as controlling confirmation that Hollis survives Bruen, because Bruen “reinforces” Heller’s dangerous-and-unusual discussion on which Hollis relied.
• New York State Rifle & Pistol Ass'n, Inc. v. Bruen was distinguished as addressing public carry of handguns by law-abiding citizens, not machineguns.
• The “Rule of Orderliness” was grounded in Thompson v. Dall. City Att'y's Off. (citing United States v. Traxler) and United States v. Alcantar (intervening change must be unequivocal). This procedural doctrine—rather than a fresh historical analysis—effectively decided the Second Amendment question at the panel level.

3.2 Legal Reasoning

A. LPR data: why no “search” occurred

The court’s core move was to characterize the LPR system as generating periodic, fixed-point observations of a vehicle on public roads, rather than continuous, high-resolution tracking. On that characterization, the court concluded:

• Public-road movements generally lack a reasonable expectation of privacy under Knotts.
• LPR hits are materially less revealing than CSLI in Carpenter and Location History/geofence evidence discussed in United States v. Smith, because LPR cameras do not “faithfully follow” a person into private spaces and do not capture the “whole” of movements.
• Because license plates are exposed to public view, the act of scanning/recording them at a public intersection is, in the court’s view, closer to an automated form of what an officer could observe, reinforced by Olabisiomotosho.

Notably, the court acknowledged the retrospective feature (the ability to look back in time), but treated the limited camera footprint (about ten cameras across Gautier) and “periodic” nature of hits as preventing the kind of comprehensive, intimate portrait that triggered Fourth Amendment protection in Carpenter.

B. Stop validity: why an ALPR/BOLO warrant hit sufficed

Applying Hensley and BOLO reliability factors from Gonzalez, the court held that an ALPR/BOLO alert tying a specific car and plate to a person with an active arrest warrant can furnish reasonable suspicion to stop that car—without a physical description of the driver—where the information is specific and verifiable and the warrant is not stale. The court also emphasized the collective-knowledge principle: the stopping officer may rely on police-channel information so long as it is grounded in articulable facts.

C. Seizure of the gun/switch: plain view despite ambiguous video

The panel affirmed the district court’s finding that the gun and conversion switch were observed in plain view (barrel protruding; switch visible) and that the incriminating nature of the conversion device was immediately apparent. The opinion’s key methodological step was to treat the bodycam footage as non-dispositive: because the camera angle may not match the officer’s eye line and because the video was “ambiguous,” it did not “plainly contradict” the officer’s testimony, so deference to credibility findings controlled.

D. Second Amendment: precedent, not re-litigation

On § 922(o), the panel did not undertake an independent Bruen historical-tradition analysis. Instead, it applied the Rule of Orderliness: Hollis remains binding, and Wilson recently reaffirmed that Bruen does not unequivocally overrule Hollis. That doctrinal posture made Porter’s facial and as-applied challenges fail as a matter of circuit law.

3.3 Impact

A. Fourth Amendment and surveillance technology

• Consolidation of an “LPR is not CSLI” approach: The opinion strengthens a distinction between (i) fixed-point, periodic LPR hits on public roads and (ii) comprehensive location datasets (CSLI, Google Location History, geofences). Litigants should expect the Fifth Circuit to focus on coverage density, precision, continuity, and whether the technology reveals entry into constitutionally sensitive spaces.
• Fact sensitivity for broader LPR deployments: The reasoning leans on the record’s limits (about ten cameras; inability to locate the vehicle despite earlier hits). A denser network, longer retention, higher hit frequency, or analytics enabling near-continuous reconstruction could invite renewed Carpenter/Smith arguments on a different record.

B. Stops based on automated “hits” and police-channel information

• Operational validation of ALPR/BOLO workflows: The court’s endorsement of reasonable suspicion based “solely” on an ALPR hit tied to an outstanding warrant, without a driver description, provides strong authority for traffic stops triggered by automated alerts—so long as the underlying information is specific, verifiable, and current.
• Emphasis on verifiability and warrant status: The court highlighted that the warrant was valid and later confirmed; future suppression disputes may focus on erroneous or outdated warrant data and what officers did to verify the alert before escalating.

C. Body-camera ambiguity and suppression litigation

• Deference where video is unclear: The opinion underscores that bodycam footage is not a universal trump card; unless it clearly contradicts testimony, appellate courts will often defer to trial-level credibility findings.
• Practical litigation shift: Expect more focus on camera placement, field of view, lighting, and whether “ambiguity” can be converted into “contradiction” through expert testimony or enhanced footage—because that is where Scott v. Harris can become outcome-determinative.

D. Second Amendment challenges to § 922(o) in the Fifth Circuit

• Near-term foreclosure: After Wilson, this decision signals that § 922(o) challenges are effectively blocked at the panel level absent an unequivocal intervening Supreme Court change or en banc reconsideration.
• Doctrinal entrenchment: The panel’s framing that Bruen “reinforces” the dangerous-and-unusual carveout (via Heller dicta relied upon in Hollis) strengthens the government’s position in machinegun and conversion-device prosecutions within the circuit.

4. Complex Concepts Simplified

• “Search” (Fourth Amendment): A government action is typically a “search” when it invades a person’s reasonable expectation of privacy. The court said periodic LPR hits on public roads do not cross that line because they resemble observing what is already exposed to the public and do not comprehensively map a person’s life.
• CSLI vs. LPR hits: CSLI (cell-site location information) can approximate near-continuous tracking over time and can reveal visits to private/sensitive places. LPR hits, as described here, are occasional snapshots only when a car passes a fixed camera.
• Reasonable suspicion: A lower standard than probable cause; it requires specific, articulable facts suggesting a person is involved in wrongdoing or wanted for an offense. It can be based on reliable police bulletins/alerts.
• Collective knowledge doctrine: An officer may act on information from other officers or dispatch; the legality of the stop can rest on the combined knowledge of law enforcement communicated through official channels.
• Plain view doctrine: Police may seize evidence without a warrant if they are lawfully present, the item is visible, its criminal character is immediately apparent, and they have lawful access to it.
• Facial vs. as-applied constitutional challenge: “As-applied” argues the law is unconstitutional in the defendant’s circumstances; “facial” argues the law is unconstitutional in all applications—a much harder standard.
• Rule of Orderliness: Fifth Circuit panels must follow earlier circuit precedent unless an intervening higher-court decision unequivocally changes the law; this can decide constitutional issues without redoing the full merits analysis.
• “Dangerous and unusual” weapons / “common use”: Under the line of reasoning the Fifth Circuit follows from Heller through Hollis and Wilson, weapons deemed “dangerous and unusual” and not “in common use” fall outside Second Amendment protection; machineguns are placed in that category.

5. Conclusion

United States v. Porter delivers two clear, practice-shaping messages in the Fifth Circuit. First, LPR-generated, fixed-point, periodic location hits on public roads—especially from a limited camera network—do not constitute a Fourth Amendment search, and ALPR/BOLO warrant hits can provide reasonable suspicion for a stop even without a driver description. Second, § 922(o)’s machinegun ban remains insulated from panel-level Second Amendment attack under the binding force of Hollis v. Lynch, as reaffirmed by United States v. Wilson and enforced through the Rule of Orderliness. Together, these holdings strengthen law-enforcement reliance on automated plate-reader alerts and reinforce the Fifth Circuit’s continued exclusion of machineguns (and conversion devices) from Second Amendment coverage absent an unequivocal change in higher authority.