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No. 10637838
United States Court of Appeals for the Ninth Circuit
United States v. Yetisen
No. 10637838 · Decided July 21, 2025
No. 10637838·Ninth Circuit · 2025·
FlawFinder last updated this page Apr. 2, 2026
Case Details
Court
United States Court of Appeals for the Ninth Circuit
Decided
July 21, 2025
Citation
No. 10637838
Disposition
See opinion text.
Full Opinion
NOT FOR PUBLICATION FILED
UNITED STATES COURT OF APPEALS JUL 21 2025
MOLLY C. DWYER, CLERK
U.S. COURT OF APPEALS
FOR THE NINTH CIRCUIT
UNITED STATES OF AMERICA, No. 23-3892
D.C. No.
Plaintiff - Appellee, 3:18-cv-00570-HZ
v.
MEMORANDUM*
SAMMY RASEMA YETISEN, AKA
Rasema Handanovic, AKA Zolja,
Defendant - Appellant.
Appeal from the United States District Court
for the District of Oregon
Marco A. Hernández, District Judge, Presiding
Argued and Submitted July 11, 2025
San Francisco, California
Before: H.A. THOMAS and DE ALBA, Circuit Judges, and RAKOFF, District
Judge.**
Sammy Rasema Yetisen appeals the district court’s grant of summary
judgment to the United States in this civil denaturalization proceeding. Yetisen
*
This disposition is not appropriate for publication and is not precedent
except as provided by Ninth Circuit Rule 36-3.
**
The Honorable Jed S. Rakoff, United States District Judge for the
Southern District of New York, sitting by designation.
also appeals the district court’s decision to admit the expert testimony of Dr.
William Tomljanovich. As the parties are familiar with the facts, we do not recount
them here. We have jurisdiction under 28 U.S.C. § 1291. We affirm.
1. We review for abuse of discretion a district court’s decision to admit
expert testimony. BillFloat Inc. v. Collins Cash Inc., 105 F.4th 1269, 1275 (9th
Cir. 2024). Here, the district court abused its discretion in admitting Dr.
Tomljanovich’s testimony because it failed to make an explicit reliability finding.
See United States v. Valencia-Lopez, 971 F.3d 891, 900 (9th Cir. 2020) (explaining
that while “qualifications and experience are relevant, and indeed necessary[,] . . .
they cannot establish the reliability and thus the admissibility of the expert
testimony at issue”). The district court’s error was harmless, however, because the
record demonstrates that Dr. Tomljanovich’s testimony is both reliable and
relevant.1
Dr. Tomljanovich is an expert in the history of the former Yugoslavia, its
successor states, and the wars that followed the dissolution of Yugoslavia. He
produced a report spanning over 100 pages using a variety of sources and his
background knowledge of the topic. His report detailed the history of the region
1
We also conclude that the district court’s decision would have been the
same absent Dr. Tomljanovich’s testimony, but need not further discuss that issue
as our conclusion that the testimony is relevant and reliable is sufficient for our
harmless error analysis. See United States v. Jimenez-Chaidez, 96 F.4th 1257, 1269
(9th Cir. 2024).
2 23-3892
dating back to the 1500s with a particular emphasis on the history of ethnic
tensions in the region. He also explained the structure of the Army of the Republic
of Bosnia and Herzegovina (“ABiH”), including its Zulfikar Unit, and based those
explanations on his analysis of documentary evidence. Such context is relevant to
the Trusina massacre. See United States v. Ruvalcaba-Garcia, 923 F.3d 1183, 1188
(9th Cir. 2019) (per curiam) (“Relevancy simply requires that the evidence
logically advance a material aspect of the party’s case.” (internal quotation marks
omitted)). Dr. Tomljanovich also properly testified about the methodology used in
his report. See id. at 1188–89 (noting that reliability “requires that the expert’s
testimony have a reliable basis in the knowledge and experience of the relevant
discipline” (internal quotation marks omitted)).
2. We review de novo the district court’s grant of summary judgment,
“viewing the evidence in the light most favorable to the non-moving party and
drawing all reasonable inferences in its favor.” Schrader Cellars, LLC v. Roach,
129 F.4th 1115, 1122 (9th Cir. 2025) (quoting Bell v. Wilmott Storage Servs., LLC,
12 F.4th 1065, 1068 (9th Cir. 2021)). In a civil denaturalization proceeding,
summary judgment is appropriate if “there is no genuine issue of material fact as to
whether clear, unequivocal, and convincing evidence supports denaturalization.”
United States v. Arango, 670 F.3d 988, 992 (9th Cir. 2012).
We affirm the district court’s grant of summary judgment to the United
3 23-3892
States as to Counts 2 and 5.2 A misrepresentation claim has four elements: (1) “the
naturalized citizen must have misrepresented or concealed some fact,” (2) “the
misrepresentation or concealment must have been willful,” (3) “the fact must have
been material,” and (4) “the naturalized citizen must have procured citizenship as a
result of the misrepresentation or concealment.” Kungys v. United States, 485 U.S.
759, 767 (1988). Here, Yetisen failed to disclose that she had served in the Zulfikar
Unit on both her asylum application (Count 2) and her naturalization application
(Count 5). There is no genuine dispute of material fact that Yetisen did so
willfully. “[A]n intent to deceive is not required” and “knowledge of the falsity of
a representation is sufficient.” Forbes v. INS, 48 F.3d 439, 442 (9th Cir. 1995).
Yetisen’s failure to disclose her service was material because it had a “natural
tendency to influence the decisions of” immigration officials. Kungys, 485 U.S. at
772. And Yetisen procured citizenship as a result of this concealment, as the record
demonstrates that she would have been ineligible under the persecutor bar had she
disclosed her service in the Zulfikar Unit. See id. at 767.
3. We review de novo the question whether an equitable defense “is a valid
defense to the particular cause of action.” Jarrow Formulas, Inc. v. Nutrition Now,
Inc., 304 F.3d 829, 834 (9th Cir. 2002). We review for abuse of discretion a district
2
Because we affirm on Counts 2 and 5, we need not reach the district
court’s grant of summary judgment to the United States as to Counts 1 and 3.
4 23-3892
court’s application of laches. Pinkette Clothing, Inc. v. Cosmetic Warriors Ltd.,
894 F.3d 1015, 1025 (9th Cir. 2018).
Even assuming laches is an available defense in a civil denaturalization
proceeding, the district court did not abuse its discretion in rejecting Yetisen’s
laches defense. “Laches requires proof of (1) lack of diligence by the party against
whom the defense is asserted, and (2) prejudice to the party asserting the defense.”
Costello v. United States, 365 U.S. 265, 282 (1961). Yetisen cannot show a lack of
diligence on the government’s part. There is no evidence or testimony
demonstrating that Yetisen ever disclosed her service in the Zulfikar Unit. The
government did not learn of Yetisen’s service in the Zulfikar Unit until March
2009. Yetisen was subsequently extradited to Bosnia in November 2011, sentenced
to five and a half years in prison in April 2012, and returned to the United States
after serving that sentence. The government initiated this action in April 2018, less
than a year after Yetisen’s return to the United States. Considering Yetisen’s
extradition to and prison sentence in Bosnia, a six-month delay after Yetisen
returned to the United States hardly demonstrates a lack of diligence. See United
States v. Dang, 488 F.3d 1135, 1144 (9th Cir. 2007) (noting that “most
denaturalization proceedings are instituted beyond [a] five-year period”).
AFFIRMED.
5 23-3892
Plain English Summary
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS JUL 21 2025 MOLLY C.
Key Points
01NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS JUL 21 2025 MOLLY C.
02COURT OF APPEALS FOR THE NINTH CIRCUIT UNITED STATES OF AMERICA, No.