United States v. Becker: Probable-Cause Nexus for Firearm Searches—Database Attribution Plus Surveillance Supports “Residence” and Firearm-at-Home Inference Survives Three-Week Delay

Introduction

In United States v. Becker (10th Cir. Mar. 9, 2026), the Tenth Circuit addressed two recurring issues in federal criminal practice: (1) what facts establish a sufficient nexus between suspected criminal activity and a residence to justify a search warrant—particularly where the sought evidence is a firearm used in a prior incident and some time has passed; and (2) whether 18 U.S.C. § 922(g)(1) (felon-in-possession) violates the Second Amendment after recent Supreme Court developments.

The case arose from an alleged February 13, 2023 road-rage shooting. Police linked the suspect, Mackenzie Becker, to two addresses and to two Saab vehicles displaying the same license-plate number. Officers ultimately obtained and executed a warrant for a house on West Iliff Lane, discovering firearms and drug-trafficking evidence, and then obtained a second warrant to continue searching for drug evidence. Becker pleaded guilty to drug counts and to being a felon in possession, while preserving his right to appeal the denial of his suppression motion.

The key Fourth Amendment question was whether the first warrant affidavit sufficiently connected (a) Becker to the West Iliff Lane house and (b) the road-rage shooting (and firearm evidence) to that location, despite a roughly three-week interval between the incident and the warrant application.

Summary of the Opinion

The Tenth Circuit affirmed. It held the affidavit provided a substantial basis for probable cause because:

  • The affidavit adequately supported an inference that Becker resided at (or at least used and controlled) the West Iliff Lane house—via law-enforcement database attribution corroborated by surveillance showing Becker at the house and the relevant gray Saab in the driveway.
  • It was reasonable to infer that a firearm used during the road-rage incident would be kept at Becker’s residence; the three-week lapse did not render that inference stale.
  • Becker’s Second Amendment challenge to § 922(g)(1) was foreclosed by Tenth Circuit precedent, particularly Vincent v. Garland as readopted in Vincent v. Bondi. His “as-applied” argument was also rejected as inadequately developed under appellate briefing rules.

Because probable cause existed, the court did not reach the government’s alternative good-faith argument.

Analysis

Precedents Cited

1) The probable-cause framework and deferential review

The court began with the familiar standard that probable cause exists when an affidavit supplies a “substantial basis” to conclude there is a “fair probability” evidence will be found in a particular place, citing United States v. Alqahtani. It emphasized appellate deference to the issuing magistrate’s determination, citing United States v. Sadlowski for the “great deference” and “substantial basis” review posture. This mattered because Becker’s challenge targeted whether inferences drawn by the magistrate (residence; firearm storage; non-staleness) were reasonable, not whether they were certain.

2) Linking a suspect to an address: distinguishing “police summaries”

Becker relied heavily on United States v. Roach, arguing that a warrant cannot rest on vague database references and conclusory “verification” statements. The panel distinguished Roach on its facts: Roach involved a broad, generalized assertion that officers “verified” multiple individuals’ addresses using an unspecified mix of many techniques, leaving the magistrate unable to tell what was actually done for each person.

Here, even though Detective Sloan did not list every database queried, the affidavit clearly indicated that law-enforcement records tied Becker to West Iliff Lane and—critically— that surveillance corroborated the tie: the gray Saab associated with the incident was found at the house; Becker was observed washing it in the driveway and entering/exiting the home. The court also invoked United States v. Sanchez, which distinguished Roach where the affidavit specified database checks and other verifying sources. The through-line is that Roach is not a categorical rule against database-based linkage; it is a warning against opaque, unparticularized “we verified it” assertions untethered to discernible investigative steps.

3) The nexus between the crime and the place: Rowland, Harris, and the “additional evidence” requirement

On nexus, Becker invoked United States v. Rowland, where the court rejected a residential search after a suspect collected illicit videotapes at a post office box because the home was “but one of an otherwise unlimited possible sites” the tapes could have been taken, and the affidavit did not supply “additional evidence” linking the home to the contraband.

The panel emphasized that Rowland does not impose a high bar; it requires some meaningful bridge between criminal conduct and the specific place to be searched. It then analogized to United States v. Harris (Gorsuch, J.), which upheld a search based on specific facts linking a stolen murder-vehicle to an auto shop and supported reasonable concealment inferences. Harris stands for the proposition that nexus can be established by a combination of observed behavior, location association, and reasonable criminological inferences—not solely by the fact that the person is suspected of a crime.

4) Firearms as evidence “likely kept at home,” and staleness

The most consequential line of authority was the firearm-retention inference. The court relied on United States v. Alqahtani for two linked propositions: (a) a “personal firearm” is the type of evidence likely kept in a suspect’s residence, and (b) it is likely to remain there “for an extended period of time.” The panel further supported this inference with older and out-of-circuit authority: United States v. Rahn (10th Cir. 1975), United States v. Jones (3d Cir. 1993), and United States v. Anderson (4th Cir. 1988), all recognizing firearms are commonly kept at home or with their owner.

The opinion acknowledged contrary instinct in United States v. Charest (1st Cir. 1979), which deemed it unlikely a murderer would hide the murder weapon at home. But the Tenth Circuit treated the dominant inference—especially for “personal firearms”—as the governing common-sense baseline in its circuit.

On staleness, the panel rejected the claim that a three-week delay made the firearm’s location purely speculative. Citing United States v. Steeves (8th Cir. 1975) and United States v. Alqahtani (where five months did not defeat probable cause), the court treated the passage of time as a factor whose force depends on the nature of the item. It also observed practical incentives: because Becker was allegedly a felon, disposal would make replacement more difficult—an inference cutting against rapid abandonment.

In a notable footnote engagement with post-decision authority, the panel declined to follow the Fifth Circuit’s divided decision in United States v. Wilson, which suggested firearm-likelihood at home “quickly dwindles” with each passing day. The Tenth Circuit characterized Wilson as inconsistent with its own precedent, particularly Rahn and Alqahtani.

5) Mora and “special class” nexus inferences

Becker invoked United States v. Mora, which discussed factors for residential nexus and emphasized that certain “special class” crimes—particularly drug trafficking—permit an experience-based inference that evidence is likely at the home. Mora held alien smuggling was not within that special class. The Becker court used Mora in reverse: it placed firearms (as evidence sought) within the class where home-storage is a strong, reasonable inference, explicitly relying again on Alqahtani and supporting treatise guidance from 2 Wayne R. LaFave, Search & Seizure § 3.7(d).

6) Second Amendment: binding circuit precedent after Rahimi

Becker’s constitutional challenge was disposed of on stare decisis grounds. The panel cited Vincent v. Garland (later “vacated and remanded”) and its readoption as Vincent v. Bondi, with a noted denial of certiorari. The court also referenced the Supreme Court’s instruction to reconsider in light of United States v. Rahimi, signaling that the circuit had already revisited the issue post-Rahimi and maintained its position.

For Becker’s “as applied” contention, the court invoked Fed. R. App. P. 28(a)(8)(A) and United States v. Clay to decline consideration where the argument was perfunctory and undeveloped—particularly notable because Becker’s criminal history (including violent offenses) could matter to an as-applied analysis, yet he did not do the work of explaining why history and tradition would protect him.

Legal Reasoning

1) Residence nexus: database attribution + corroboration is enough

The court’s reasoning is best understood as a two-step inference chain: (i) establish that West Iliff Lane is fairly probably Becker’s residence (or a place he controls), then (ii) infer that evidence of the firearm offense is fairly probably located where he lives.

On step (i), the affidavit did not need property records or a lease to show residence. It was enough that “several law enforcement databases” attributed the address to Becker and surveillance corroborated that attribution with real-world observations (Becker repeatedly at the home; the relevant vehicle parked there; Becker tending to it in the driveway). The panel treated this combination as qualitatively different from the defect in Roach, where the affidavit’s verification claim was too generalized and non-specific.

2) Crime-to-place nexus: firearms are not like transient contraband in Rowland

On step (ii), the court framed Rowland as a case about an affidavit that failed to eliminate “endless possibilities” because there was no factual basis to think the contraband ever reached the home. Becker, by contrast, involved an item (a “personal firearm”) that common sense and precedent treat as typically kept at home. The court accepted Detective Sloan’s statement that firearms are “not normally disposed of after the commission of a crime” as consistent with judicial experience in this area, especially when tethered to the now-established inference in Tenth Circuit law.

3) Staleness: three weeks is well within the durability of firearm-location inferences

The panel treated staleness as context-dependent: time undermines probable cause where the evidence is inherently mobile and likely to be consumed, sold, or moved quickly. Firearms, however, are durable goods often retained, and Tenth Circuit precedent recognizes that the likelihood of finding a personal firearm in a residence can endure for months. Therefore, the three-week gap did not collapse probable cause.

The opinion also underscored a corroborative “anchor” for the inference: officers observed that the gray Saab tied to the incident remained at the West Iliff Lane address, supporting a broader conclusion that instrumentalities connected to the incident were being kept there.

4) Second Amendment: no error to correct under binding precedent

On the constitutional issue, the panel’s reasoning was institutional: Becker conceded circuit precedent foreclosed his claim, and the panel reiterated that Vincent v. Bondi remained controlling in the circuit even after reconsideration in light of United States v. Rahimi. Without a viable argument distinguishing that precedent, Becker could not show reversible error.

Impact

1) Practical guidance for warrant drafting and litigation

  • Address linkage: In the Tenth Circuit, an affidavit may rely on law-enforcement database attribution to connect a suspect to an address, especially when supported by straightforward surveillance corroboration (presence, repeated entry/exit, vehicle-associated conduct). While more detail is always safer, the court signaled that the key is whether the magistrate can see a concrete evidentiary basis—not merely a conclusory “we verified it.”
  • Firearm nexus: The decision reinforces that where the evidence sought is a “personal firearm,” courts may readily infer it will be kept at the suspect’s residence (or controlled premises) absent countervailing facts.
  • Staleness: A three-week gap is unlikely, standing alone, to defeat probable cause for a firearm search in this circuit. Litigants should focus on item-type, user behavior, and whether intervening events suggest disposal or relocation.
  • Out-of-circuit splits: The court’s explicit rejection of United States v. Wilson indicates that arguments portraying firearms as rapidly “dwindling” evidence face headwinds in the Tenth Circuit.

2) Fourth Amendment doctrine: strengthening a categorical inference

Although framed as an application of existing law, Becker materially consolidates the Tenth Circuit’s trend—seen in Alqahtani—toward treating personal firearms as a category of evidence for which residential inference is strong and temporally durable. That affects suppression litigation: defendants will often need case-specific facts negating the inference (e.g., evidence of disposal, sale, travel, incarceration, or an alternative storage pattern), rather than relying on generalized arguments about portability.

3) Second Amendment: § 922(g)(1) remains stable in this circuit (for now)

On § 922(g)(1), the opinion signals continued circuit stability after United States v. Rahimi. Practically, defendants in the Tenth Circuit should expect panels to dispose of § 922(g)(1) challenges via Vincent v. Bondi unless and until the Supreme Court changes the governing framework or directly addresses felon dispossession in a way that displaces existing circuit precedent.

The court’s enforcement of briefing rigor under United States v. Clay also signals that any “as applied” challenge must be fully developed with historically grounded analysis, not simply asserted.

Complex Concepts Simplified

Probable cause
A commonsense standard requiring a “fair probability,” not certainty, that evidence of a crime will be found in the place to be searched.
Nexus
The connection the affidavit must show between (1) the suspected crime/evidence and (2) the specific place to be searched. Suspecting someone of a crime is not, by itself, enough to search their home.
Staleness
The idea that information can get “too old” to support probable cause. Whether it is stale depends on the type of evidence and how likely it is to remain in one place over time.
“Police summary” problem (from Roach)
A defect that occurs when an affidavit provides only a conclusory statement (e.g., “we verified he lives there”) without enough detail for the magistrate to evaluate the basis for that claim. Becker clarifies that database attribution plus corroborating surveillance can cure this concern.
Facial vs. as-applied challenge
A facial challenge argues a law is unconstitutional in all applications; an as-applied challenge argues it is unconstitutional for a particular person under particular facts. The court refused to engage an as-applied theory that was not meaningfully argued.

Conclusion

United States v. Becker reinforces two central rules in the Tenth Circuit. First, a warrant affidavit can establish a residence nexus through law-enforcement database linkage corroborated by surveillance, without needing formal property documentation. Second, when the sought evidence is a personal firearm used in a prior offense, courts may reasonably infer it will be kept at the suspect’s residence and that this inference can remain viable weeks—and even months—after the underlying incident. On the constitutional front, the decision confirms that Second Amendment challenges to 18 U.S.C. § 922(g)(1) remain foreclosed in this circuit by Vincent v. Bondi, and it underscores that any as-applied challenge must be fully developed to be considered on appeal.