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No. 9504319
United States Court of Appeals for the Ninth Circuit
United States v. Louangamath
No. 9504319 · Decided May 17, 2024
No. 9504319·Ninth Circuit · 2024·
FlawFinder last updated this page Apr. 2, 2026
Case Details
Court
United States Court of Appeals for the Ninth Circuit
Decided
May 17, 2024
Citation
No. 9504319
Disposition
See opinion text.
Full Opinion
NOT FOR PUBLICATION FILED
UNITED STATES COURT OF APPEALS MAY 17 2024
MOLLY C. DWYER, CLERK
U.S. COURT OF APPEALS
FOR THE NINTH CIRCUIT
UNITED STATES OF AMERICA, No. 23-827
D.C. No.
Plaintiff - Appellee, 2:20-cr-00034-KJM-1
v.
MEMORANDUM*
DERICK LOUANGAMATH,
Defendant - Appellant.
Appeal from the United States District Court
for the Eastern District of California
Kimberly J. Mueller, Chief District Judge, Presiding
Submitted May 14, 2024**
San Francisco, California
Before: LEE and BRESS, Circuit Judges, and TUNHEIM, Senior District Judge.***
Derick Louangamath appeals the district court’s denial of his motion to
suppress evidence supporting his conviction for being a felon in possession of a
*
This disposition is not appropriate for publication and is not precedent
except as provided by Ninth Circuit Rule 36-3.
**
The panel unanimously concludes this case is suitable for decision
without oral argument. See Fed. R. App. P. 34(a)(2).
***
The Honorable John R. Tunheim, United States Senior District Judge
for the District of Minnesota, sitting by designation.
firearm, in violation of 18 U.S.C. § 922(g)(1). Louangamath argues that the district
court erred in concluding that officers had reasonable suspicion to conduct the traffic
stop that led to the search of his vehicle, in which a gun was found. We have
jurisdiction under 28 U.S.C. § 1291. “We review the district court’s denial of a
motion to suppress de novo and its factual findings for clear error.” United States v.
Taylor, 60 F.4th 1233, 1239 (9th Cir. 2023). We affirm.
“[A] police officer may conduct an investigatory traffic stop if the officer has
reasonable suspicion that a particular person has committed, is committing, or is
about to commit a crime.” United States v. Choudhry, 461 F.3d 1097, 1100 (9th Cir.
2006) (internal quotation marks omitted). “Officers have reasonable suspicion when
specific, articulable facts together with objective and reasonable inferences, form the
basis for suspecting that the particular person detained is engaged in criminal
activity.” Id. (internal quotation marks and ellipses omitted). “A traffic violation
alone is sufficient to establish reasonable suspicion.” Id.
After a two-day evidentiary hearing, the district court concluded that officers
stopped Louangamath because they reasonably believed he was driving with his high
beams on in sufficient proximity to other drivers in violation of California law. See
Cal. Veh. Code § 24409(a). The district court’s reasonable suspicion finding was
not “illogical, implausible, or without support in inferences that may be drawn from
the record.” United States v. Hinkson, 585 F.3d 1247, 1262 (9th Cir. 2009) (en
2 23-827
banc).
Both officers involved in the stop testified that, before they stopped
Louangamath, they were aware of California’s restrictions on high beam usage.
Both officers also attested that they believed Louangamath was using his high beams
as soon as they observed his vehicle. Indeed, body camera footage from the stop
reflects that the first question officers asked Louangamath was whether his high
beams were on. The district court did not err in crediting these indicia of the officers’
reasonable suspicions. See Conrad v. United States, 447 F.3d 760, 768 (9th Cir.
2006) (“When a trial judge’s finding is based on his decision to credit the testimony
of one of two or more witnesses . . . that finding . . . can virtually never be clear
error.”) (quoting Anderson v. City of Bessemer, 470 U.S. 564, 575 (1985)).
Louangamath argues that the officers’ version of events should have been
rejected because the officers did not record on their cameras Louangamath’s
headlights prior to stopping him, nor did they offer Louangamath any signal that his
high beams were on. But neither omission undermines the district court’s crediting
of the officers’ testimony. As the officers explained, their dashboard and body
cameras typically do not turn on until they activate their patrol lights, and it would
have been a “poor tactic” to activate those lights in the crowded parking lot where
they first encountered Louangamath. Nor did the officers have any obligation to
alert Louangamath of his traffic violation before stopping him.
3 23-827
Louangamath also contends that the real reason officers stopped him was their
belief that he belonged to a street gang—a concern that Louangamath suggests
would have been top of mind because the officers belonged to an anti-gang
enforcement unit and had recently received a bulletin advising of an uptick in
violence between local Asian gangs. But both officers testified that they did not
remember reading the particular bulletin Louangamath cites and did not suspect that
Louangamath held any gang affiliation prior to stopping him. The district court was
entitled to credit this testimony. And even if the officers had harbored some belief
that Louangamath was a gang member before stopping him, that would not alter the
analysis here. “[T]he constitutional reasonableness of traffic stops” does not
“depend[] on the actual motivations of the individual officers involved.” Whren v.
United States, 517 U.S. 806, 813 (1996). In this case, the record supports the district
court’s finding that officers had objectively reasonable suspicion to stop
Louangamath for violating the traffic laws.
AFFIRMED.
4 23-827
Plain English Summary
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS MAY 17 2024 MOLLY C.
Key Points
01NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS MAY 17 2024 MOLLY C.
02COURT OF APPEALS FOR THE NINTH CIRCUIT UNITED STATES OF AMERICA, No.
03Mueller, Chief District Judge, Presiding Submitted May 14, 2024** San Francisco, California Before: LEE and BRESS, Circuit Judges, and TUNHEIM, Senior District Judge.*** Derick Louangamath appeals the district court’s denial of his motion t
04** The panel unanimously concludes this case is suitable for decision without oral argument.
Frequently Asked Questions
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS MAY 17 2024 MOLLY C.
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