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No. 10363613
United States Court of Appeals for the Ninth Circuit
Casillas v. Clark
No. 10363613 · Decided March 25, 2025
No. 10363613·Ninth Circuit · 2025·
FlawFinder last updated this page Apr. 2, 2026
Case Details
Court
United States Court of Appeals for the Ninth Circuit
Decided
March 25, 2025
Citation
No. 10363613
Disposition
See opinion text.
Full Opinion
NOT FOR PUBLICATION FILED
UNITED STATES COURT OF APPEALS MAR 25 2025
MOLLY C. DWYER, CLERK
U.S. COURT OF APPEALS
FOR THE NINTH CIRCUIT
MARCO ANTONIO CASILLAS, No. 23-2213
D.C. No.
Petitioner - Appellant, 2:21-cv-01267-SPG-MAR
v.
MEMORANDUM*
KEN CLARK, Warden,
Respondent - Appellee.
Appeal from the United States District Court
for the Central District of California
Sherilyn Peace Garnett, District Judge, Presiding
Argued and Submitted March 5, 2025
Pasadena, California
Before: TALLMAN, CLIFTON, and CHRISTEN, Circuit Judges.
Petitioner Marco Antonio Casillas appeals the district court’s order denying
his 28 U.S.C. § 2254 habeas corpus petition challenging his conviction for first
degree murder committed during a burglary, for which he received a life sentence
without parole. Because the parties are familiar with the facts, we do not recount
them here. We have jurisdiction pursuant to 28 U.S.C. §§ 1291 and 2253. We
*
This disposition is not appropriate for publication and is not precedent
except as provided by Ninth Circuit Rule 36-3.
review de novo the denial of a petition for writ of habeas corpus. Earp v. Davis,
881 F.3d 1135, 1142 (9th Cir. 2018). We affirm.
1. We review Casillas’ claim that the trial court deprived him of his
constitutional right to present a complete defense pursuant to the Antiterrorism and
Effective Death Penalty Act (AEDPA). Casillas argues that in resolving this claim
on state evidentiary grounds, the California Court of Appeal inadvertently
overlooked his federal constitutional claim, warranting de novo review on appeal.
See Johnson v. Williams, 568 U.S. 289, 301–03 (2013) (holding that 28 U.S.C.
§ 2254(d) applies only to claims adjudicated on the merits). We disagree. In his
brief on direct appeal, Casillas presented his third-party defense claim as one
implicating his federal constitutional rights. Thus, we “presume[] that the state
court adjudicated the claim on the merits.” Harrington v. Richter, 562 U.S. 86, 99
(2011). So long as the state court “heard and evaluated the evidence and the
parties’ substantive arguments,” this presumption applies. Johnson, 568 U.S. at
302 (quoting Black’s Law Dictionary 1199 (9th ed. 2009)).
2. The California Court of Appeal’s conclusion that the trial court’s
exclusion of Casillas’ third-party culpability evidence did not violate due process
was not an unreasonable application of clearly established federal law. In rare
cases, the application of an otherwise valid state evidentiary rule can violate due
process. See Chambers v. Mississippi, 410 U.S. 284, 302 (1973). However, the
2 23-2213
trial court’s exclusion of the evidence in Chambers violated due process because
that evidence “bore persuasive assurances of trustworthiness.” Id.
The evidence here does not have that same level of trustworthiness. At the
trial court evidentiary hearing, Miller, a former police jailhouse informant, did not
remember writing the three-page letter that Casillas sought to introduce detailing
alleged third-party involvement in the murder. Miller also did not remember
making statements regarding third-party involvement that Volpei, the District
Attorney investigator, attributed to him. While Casillas argues that Miller’s letter
and statements provided non-public details that bolstered the trustworthiness of
this evidence, see Gable v. Williams, 49 F.4th 1315, 1330 (9th Cir. 2022), Miller’s
letter also included some facts that were demonstrably incorrect; for example, the
letter stated that Perez disposed of the murder weapon by throwing it in the ocean,
when in fact, a knife containing fibers that matched the victim’s shirt was found in
the neighborhood of the victim’s house. Plus, Miller testified that his motivation as
an informant was to escape his own criminal charges and that he was willing to tell
the police whatever it took to do so.
The exculpatory value of the excluded evidence is also minimal in light of
the overwhelming physical evidence placing Casillas at the scene of the crime
shortly before the murder took place. See Perry v. Rushen, 713 F.2d 1447, 1452
(9th Cir. 1983) (observing that the third-party culpability evidence in Chambers
3 23-2213
was “highly exculpatory,” and “if believed, would necessarily exonerate the
defendant of the primary offense.”).
3. We decline to issue a certificate of appealability as to whether the
admission of Semchenko’s identification of Casillas violated Casillas’ due process
rights.1 To obtain a certificate of appealability, Casillas “must demonstrate that
reasonable jurists would find the district court’s assessment of the constitutional
claims debatable or wrong.” Slack v. McDaniel, 529 U.S. 473, 484 (2000).
Although the identification may have been the product of impermissibly suggestive
circumstances, Casillas was not prejudiced by its admission. See Neil v. Biggers,
409 U.S. 188, 199–200 (1972); Simmons v. United States, 390 U.S. 377, 384
(1968). Even without Semchenko’s identification, the DNA evidence, fingerprints,
palmprint, and internet searches the police discovered on Casillas’ computers
provided powerful evidence that Casillas murdered Bush.
AFFIRMED.
1
We deny Casillas’ motion for judicial notice of the color version of the press
release image. Dkt. No. 14.
4 23-2213
Plain English Summary
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS MAR 25 2025 MOLLY C.
Key Points
01NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS MAR 25 2025 MOLLY C.
02COURT OF APPEALS FOR THE NINTH CIRCUIT MARCO ANTONIO CASILLAS, No.
03Petitioner Marco Antonio Casillas appeals the district court’s order denying his 28 U.S.C.
04§ 2254 habeas corpus petition challenging his conviction for first degree murder committed during a burglary, for which he received a life sentence without parole.
Frequently Asked Questions
NOT FOR PUBLICATION FILED UNITED STATES COURT OF APPEALS MAR 25 2025 MOLLY C.
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