United States v. Mark Dencklau

CourtCourt of Appeals for the Ninth Circuit
DecidedNovember 28, 2025
Docket22-30068
StatusPublished

This text of United States v. Mark Dencklau (United States v. Mark Dencklau) is published on Counsel Stack Legal Research, covering Court of Appeals for the Ninth Circuit primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
United States v. Mark Dencklau, (9th Cir. 2025).

Opinion

FOR PUBLICATION

UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT

UNITED STATES OF AMERICA, No. 22-30068

Plaintiff-Appellee, D.C. No. 3:18-cr- 00319-MO-1 v.

MARK LEROY DENCKLAU, OPINION

Defendant-Appellant.

UNITED STATES OF AMERICA, No. 22-30069

Plaintiff-Appellee, D.C. No. 3:18-cr- 00319-MO-6 v.

CHAD LEROY ERICKSON,

Appeal from the United States District Court for the District of Oregon Michael W. Mosman, District Judge, Presiding

Argued and Submitted November 7, 2025 Portland, Oregon 2 USA V. DENCKLAU

Filed November 28, 2025

Before: MILAN D. SMITH, JR., JACQUELINE H. NGUYEN, and HOLLY A. THOMAS, Circuit Judges.

Opinion by Judge Milan D. Smith, Jr.

SUMMARY *

Criminal Law

The panel affirmed Mark Leroy Dencklau’s and Chad Leroy Erickson’s convictions and life sentences for offenses arising from the kidnapping and murder of a former fellow member of the Gypsy Joker Motorcycle Club (GJMC). Dencklau and Erickson were both convicted of murder in violation of the Violent Crimes in Aid of Racketeering statute (VICAR) (Count 2), VICAR kidnapping resulting in death (Count 3), kidnapping resulting in death (Count 4), and conspiracy to commit kidnapping resulting in death (Count 5). Dencklau was also convicted of racketeering conspiracy (Count 1). Affirming the district court’s denial of the dismissal of Counts 2 and 3, the panel held that where a VICAR indictment tracks the VICAR statute’s language, it sufficiently informs the defendant of his charge, even if it

* This summary constitutes no part of the opinion of the court. It has been prepared by court staff for the convenience of the reader. USA V. DENCKLAU 3

does not enumerate the elements of the predicate state law claim. Rejecting Dencklau’s arguments that the district court erred in three evidentiary rulings related to coconspirator Tiler Pribbernow, another GJMC associate, the panel held that the district court did not err in excluding evidence of Pribbernow’s reputation for violence under Fed. R. Evid. 404, in excluding evidence of Pribbernow’s past violent acts under Fed. R. Evid. 403 and 404, or in barring Dencklau from re-cross-examining Pribbernow about his military discharge. The panel rejected Erickson’s arguments that the district court abused its discretion under Fed. R. Evid. 702 and 403 by excluding expert testimony as to his alleged mental deficits and that the exclusion violated his Fifth and Sixth Amendment right to present his defense. The panel held that the district court did not abuse its discretion or plainly err by allowing the Government and its witnesses to use the word “gang” to describe the GJMC, by admitting evidence regarding GJMC’s “culture of misogyny,” or by allowing the prosecutors’ use of race- based evidence to show the GJMC’s cohesion. The panel held that an isolated comment by a witness stating that Erickson’s counsel was lying about phone calls made by Dencklau after he was robbed survives plain error review. The panel held that there was no error in the district court’s VICAR-purpose jury instruction, which required the enterprise-related purpose to be substantial, but not necessarily primary. 4 USA V. DENCKLAU

The panel held that the district court did not err by instructing the jury on the proper consideration of potential punishment faced by the defendants or cooperating witnesses. The totality of the instructions illustrates the district court’s good faith attempt to keep the jury in their assigned lane: focused on the facts, the evidence, and the witnesses’ credibility. This approach aligns with the purpose behind the general rule against instructions related to potential punishment and did not constitute an abuse of discretion. Finally, the panel held that circuit precedent forecloses any argument that a mandatory sentence of life without the possibility of parole violates the Eighth Amendment.

COUNSEL

Sangita K. Rao (argued), Attorney, Appellate Section; Matthew R. Galeotti, Head of Criminal Division; United States Department of Justice, Washington D.C.; Leah K. Bolstad, and Steven T. Mygrant, Assistant United States Attorneys; Suzanne Miles, Chief, Criminal Appeals Section; William M. Narus, Acting United States Attorney; Office of the United States Attorney, United States Department of Justice, Portland, Oregon; for Plaintiff-Appellee. Elizabeth G. Daily (argued), Assistant Federal Public Defender, Office of the Federal Public Defender, Portland, Oregon; Laura Graser (argued), Portland, Oregon; Ryan T. O’Connor, O’Connor Weber LLC, Portland, Oregon; for Defendants-Appellants. USA V. DENCKLAU 5

OPINION

M. SMITH, Circuit Judge:

Members of a motorcycle club kidnapped and murdered one of their former associates. Two of those members were convicted on murder and racketeering charges and now appeal their convictions and sentences, arguing that the district court violated the Federal Rules of Evidence (Rules) and the Constitution prior to and throughout their trials. We disagree, and we affirm. FACTS AND PRIOR PROCEEDINGS Defendants-Appellants Mark Leroy Dencklau and Chad Leroy Erickson appeal their convictions and sentences of life imprisonment for murder in violation of the Violent Crimes in Aid of Racketeering statute (VICAR), 18 U.S.C. § 1959(a)(1); VICAR kidnapping resulting in death in violation of 18 U.S.C. § 1959(a)(1); kidnapping resulting in death in violation of 18 U.S.C. § 1201(a)(1); and conspiracy to commit kidnapping resulting in death, in violation of 18 U.S.C. §§ 1201(a)(1) and (c). Dencklau was also convicted of racketeering conspiracy, in violation of 18 U.S.C. § 1962(d). I. Factual Background a. The Gypsy Joker Motorcycle Club Both Dencklau and Erickson were members of the Gypsy Joker Motorcycle Club (GJMC). The GJMC is an international motorcycle club with chapters in Australia, Germany, Norway, and the Northwest United States, including the States of Oregon and Washington. The club self-identifies as a “one percent” club, referring to the 6 USA V. DENCKLAU

supposed “one percent” of motorcycle drivers who do not follow the law. The GJMC is hierarchical, with a national leadership team and local chapters with their own leadership structures. Joining a GJMC chapter requires following a prescribed process, beginning with a trial period known as a “hang around,” and then a prospecting period of increasing involvement, before full membership. Members pay dues, attend weekly meetings known as Church, and participate in club events. Club members also undertake various criminal activities, such as buying and selling drugs, robbery, and assault. Prospective members are expected to participate in all GJMC activities, criminal and otherwise. Defendant-Appellant Dencklau was president of GJMC’s Portland chapter at the time of his arrest. As president, he directed various criminal activities, which included engaging in violence and drug trafficking.

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