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No. 9368424
United States Court of Appeals for the Ninth Circuit
Issac Jimenez v. Sean Moore
No. 9368424 · Decided January 12, 2023
No. 9368424·Ninth Circuit · 2023·
FlawFinder last updated this page Apr. 2, 2026
Case Details
Court
United States Court of Appeals for the Ninth Circuit
Decided
January 12, 2023
Citation
No. 9368424
Disposition
See opinion text.
Full Opinion
NOT FOR PUBLICATION FILED
UNITED STATES COURT OF APPEALS JAN 12 2023
MOLLY C. DWYER, CLERK
U.S. COURT OF APPEALS
FOR THE NINTH CIRCUIT
ISSAC EFREN JIMENEZ, No. 21-56224
Petitioner-Appellant, D.C. No.
2:20-cv-09662-AB-MAR
v.
SEAN MOORE, Acting Warden, MEMORANDUM*
Respondent-Appellee.
Appeal from the United States District Court
for the Central District of California
Andre Birotte, Jr., District Judge, Presiding
Argued and Submitted December 5, 2022
Pasadena, California
Before: M. SMITH, COLLINS, and LEE, Circuit Judges.
*
This disposition is not appropriate for publication and is not precedent
except as provided by Ninth Circuit Rule 36-3.
Petitioner Isaac Jimenez appeals from the district court’s denial of his 28
U.S.C. § 2254 habeas petition challenging the admission of expert testimony by
Detective Ben Ahrens. Because the parties are familiar with the facts, we do not
recount them here, except as necessary to provide context to our ruling.
1. To the extent that Petitioner contends that the Confrontation Clause was
violated in connection with Ahrens’ testimony that Jimenez was a participant in the
Eastside Krazies and had committed murder in furtherance of the gang’s activities,
the California Court of Appeal’s ruling that any error was harmless was not
objectively unreasonable. When a state court’s harmless-error ruling is reviewed
under AEDPA, “a federal court may not award habeas relief under § 2254 unless
the harmlessness determination itself was unreasonable.” Davis v. Ayala, 576 U.S.
257, 269 (2015). “Unreasonable” means “objectively unreasonable, not merely
wrong; even clear error will not suffice.” White v. Woodall, 572 U.S. 415, 419
(2014) (internal quotation marks and citation omitted).
When the state court in this case concluded that any error in admitting
Detective Ahrens’s testimony was harmless, it noted that there was “ample
independent evidence that Jimenez was an active participant in the Eastside
Krazies and that the crime was carried out to further the gang’s activities.” That
independent evidence includes testimony, which is not challenged on
Confrontation Clause grounds, from Eastside Krazies members David and Daniel
2
Ybarra, who stated that Petitioner attended the gang’s gatherings, used narcotics
with them, and sold narcotics to them. The Ybarras also testified that Petitioner
frequently acted as the gang’s driver and checked for unlocked vehicles with them.
David Ybarra testified that Petitioner wanted to be a full-fledged member of the
Krazies, and Petitioner’s co-defendant Castro stated that the murder Petitioner was
found guilty of committing would protect the Krazies from a perceived threat. In
addition, Ahrens’s opinion relied on other permissible material, such as the gang’s
internal “roll call roster” which included Jimenez’s name, his alias, and his
affiliation. See Lucero v. Holland, 902 F.3d 979, 990 (9th Cir. 2018) (finding that
memo made “exclusively [for] internal gang communications” was not
testimonial). His experience having spoken to “more than a few hundred” gang
members and associates, his training, and his personal investigation of Eastside
Krazies crimes, allowed Ahrens to provide the jury with information probative of
Petitioner’s status as a gang participant. And Ahrens testified, based on his
expertise, that a murder like the one in this case would enhance the reputation of a
gang, and assist someone like Jimenez in officially becoming a member of the
gang.
Given the extent of the independent evidence in the record supporting
Petitioner’s convictions on these points, it cannot be said that the state court’s
harmless-error conclusion was “objectively unreasonable” under AEDPA. And,
3
for the same reasons, any error did not have a “substantial and injurious effect” on
the outcome. See United States v. Montalvo, 331 F.3d 1052, 1058 (9th Cir. 2002)
(quoting Brecht v. Abrahamson, 507 U.S. 619, 623 (1993)).
2. To the extent that Petitioner contends that the Confrontation Clause was
violated in connection with Ahrens’ testimony concerning the predicate offenses
used to establish a “pattern of criminal activity” under California Penal Code
§ 186.22(b), there is no basis for reversal here. Such a pattern may be shown by
“conviction of two or more” specified predicate offenses, see Cal. Penal Code
§ 186.22(e) (2013 ed.) (emphasis added), and we have held that the introduction of
certifications of official court records of prior convictions does not violate the
Confrontation Clause. See United States v. Weiland, 420 F.3d 1062, 1076–77 (9th
Cir. 2005).
AFFIRMED.
4
Plain English Summary
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS JAN 12 2023 MOLLY C.
Key Points
01NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS JAN 12 2023 MOLLY C.
02COURT OF APPEALS FOR THE NINTH CIRCUIT ISSAC EFREN JIMENEZ, No.
03* This disposition is not appropriate for publication and is not precedent except as provided by Ninth Circuit Rule 36-3.
04Petitioner Isaac Jimenez appeals from the district court’s denial of his 28 U.S.C.
Frequently Asked Questions
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS JAN 12 2023 MOLLY C.
FlawCheck shows no negative treatment for Issac Jimenez v. Sean Moore in the current circuit citation data.
This case was decided on January 12, 2023.
Use the citation No. 9368424 and verify it against the official reporter before filing.