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No. 10274820
United States Court of Appeals for the Ninth Circuit
United States v. Charles Porter
No. 10274820 · Decided November 15, 2024
No. 10274820·Ninth Circuit · 2024·
FlawFinder last updated this page Apr. 2, 2026
Case Details
Court
United States Court of Appeals for the Ninth Circuit
Decided
November 15, 2024
Citation
No. 10274820
Disposition
See opinion text.
Full Opinion
FOR PUBLICATION
UNITED STATES COURT OF APPEALS
FOR THE NINTH CIRCUIT
UNITED STATES OF AMERICA, No. 22-10286
Plaintiff-Appellee, D.C. No.
1:21-cr-00042-
v. JLT-SKO-1
CHARLES PORTER,
OPINION
Defendant-Appellant.
Appeal from the United States District Court
for the Eastern District of California
Jennifer L. Thurston, District Judge, Presiding
Argued and Submitted August 21, 2024
San Francisco, California
Filed November 15, 2024
Before: Marsha S. Berzon, Daniel A. Bress, and Lawrence
VanDyke, Circuit Judges.
Opinion by Judge Bress
2 USA V. PORTER
SUMMARY *
Criminal Law
The panel affirmed Charles Porter’s conviction for
various sexual assault offenses in Yosemite National Park in
a case in which the panel addressed whether Federal Rule of
Evidence 413, which allows propensity evidence in federal
criminal sexual assault cases, violates the Fifth Amendment
Due Process Clause.
Rule 413 provides that “[i]n a criminal case in which a
defendant is accused of a sexual assault, the court may admit
evidence that the defendant committed any other sexual
assault.”
In United States v. Lemay, 260 F.3d 1018 (9th Cir. 2001),
this court rejected a facial challenge to Federal Rule of
Evidence 414, the analogous rule allowing evidence of prior
child molestation in a criminal case charging that
offense. Lemay held that as long as the protections of
Federal Rule of Evidence 403 remain in place so that district
judges retain the authority to exclude potentially devastating
evidence, Rule 414 is constitutional.
The panel held that this court’s decision in Lemay—
whose logic extends to Rule 413—compels rejection of
Porter’s challenge. When district courts retain discretion to
exclude unduly prejudicial evidence under Rule 403, Rule
413 is constitutional.
*
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. PORTER 3
The panel emphasized that Rule 413, like Rule 414, is
not a blank check entitling the government to introduce
whatever evidence it wishes. In a concurrently filed
memorandum disposition, the panel explained that the
district court conscientiously evaluated appropriate factors
and did not abuse its discretion in allowing Rule 413
testimony subject to an appropriate limiting instruction.
COUNSEL
Nirav K. Desai (argued) and Angela L. Scott, Assistant
United States Attorneys; Camil A. Skipper, Assistant United
States Attorney, Appellate Chief; Phillip A. Talbert, United
States Attorney; United States Department of Justice, Office
of the United States Attorney, Sacramento, California;
Kimberly A. Sanchez, Assistant United States Attorney;
United States Department of Justice, Office of the United
States Attorney, Fresno, California; for Plaintiff-Appellee.
Benjamin P. Lechman (argued), Law Offices of Benjamin P.
Lechman Esq., Los Angeles, California, for Defendant-
Appellant.
4 USA V. PORTER
OPINION
BRESS, Circuit Judge:
Under Federal Rule of Evidence 413, “[i]n a criminal
case in which a defendant is accused of a sexual assault, the
court may admit evidence that the defendant committed any
other sexual assault.” We are asked to decide whether this
rule allowing propensity evidence in federal criminal sexual
assault cases violates the Fifth Amendment’s Due Process
Clause. Consistent with our precedent and that of other
circuits, we hold that Rule 413 is constitutional.
I
In April 2020, Charles Porter, who worked in Yosemite
National Park, tried to anally rape T.D., another male park
employee, in Yosemite staff housing. Porter was charged
with various sexual assault offenses within the territorial
jurisdiction of the United States. See 18 U.S.C.
§§ 113(a)(1)–(2), 113(a)(4), 2241(a)(1), 2244(b).
T.D. testified at trial that Porter, who was heavily
intoxicated, entered T.D.’s cabin in the evening and forced
himself on T.D., who fought back as Porter pinned T.D.
down and tried to penetrate him. T.D.’s neighbors
corroborated that T.D. emerged from the cabin screaming for
help and struggling with Porter. Porter, who testified at trial,
claimed that T.D. was the aggressor.
Over Porter’s objection, the district court permitted
Porter’s ex-girlfriend, A.H., to testify pursuant to Federal
Rule of Evidence 413. The district court did so only after
carefully evaluating under Rule 403 whether the probative
value of A.H.’s testimony was substantially outweighed by
a danger of unfair prejudice. The district court found that a
USA V. PORTER 5
jury could conclude that Porter had sexually assaulted A.H.,
and that given the sufficient similarities between Porter’s
assaults on A.H. and T.D., which occurred close enough in
time, A.H.’s testimony was “highly relevant” and not unduly
prejudicial. The district court further determined that A.H.’s
testimony could corroborate T.D.’s account, of which T.D.
and Porter were the only direct witnesses.
When A.H. took the stand, the district court instructed
the jury as follows:
You are about to hear evidence that the
defendant may have committed a similar
offense of sexual assault. You may use this
evidence to decide whether the defendant
committed the act charged in the indictment.
You may not convict the defendant simply
because he may have committed other
unlawful acts. You may give this evidence
such weight as you think it should receive or
no weight.
A.H. then testified that during her eighteen-month
relationship with Porter, which began in the spring of 2014,
Porter had often engaged in forcible nonconsensual sex with
her over her objections, including unwanted anal sex and
other assaultive behavior. A.H. had not reported this
behavior to authorities at the time.
The jury found Porter guilty on all counts. The district
court sentenced Porter to 148 months imprisonment.
II
The usual rule is that a criminal defendant’s prior crimes
or bad acts cannot be admitted to show he had the propensity
6 USA V. PORTER
to commit the charged offense. There is a shared sense that
this type of character evidence can be probative, in that prior
misconduct “might logically be persuasive” to show that the
defendant “is by propensity a probable perpetrator of the
crime.” Old Chief v. United States, 519 U.S. 172, 181 (1997)
(quoting Michelson v. United States, 335 U.S. 469, 475
(1948)). But the prejudice associated with allowing this
“concededly relevant evidence”—that it will “‘weigh too
much with the jury and . . . so overpersuade them as to
prejudge one with a bad general record’”—has been thought
too great. Id. at 180–81 (quoting Michelson, 335 U.S. at
476). Federal Rule of Evidence 404(b) encapsulates this
view. It provides that “[e]vidence of any other crime, wrong,
or act is not admissible to prove a person’s character in order
to show that on a particular occasion the person acted in
accordance with the character.” Fed. R. Evid. 404(b)(1).
In 1994, Congress enacted exceptions to Rule 404(b) for
sexual assault and child molestation offenses in Federal
Rules of Evidence 413, 414, and 415. See Violent Crime
Control and Law Enforcement Act of 1994, Pub. L. No. 103-
332, § 320935(a), 108 Stat. 1796, 2135–37; United States v.
Sioux, 362 F.3d 1241, 1244 (9th Cir. 2004). Rule 413, the
rule at issue in this case, provides that “[i]n a criminal case
in which a defendant is accused of a sexual assault, the court
may admit evidence that the defendant committed any other
sexual assault. The evidence may be considered on any
matter to which it is relevant.” Fed. R. Evid. 413(a).
Prosecutors must provide defendants with advance notice if
they intend to offer evidence under the rule, which also
defines “sexual assault.” Fed. R. Evid. 413(b), (d). The
upshot is that under Rule 413, the government “may admit
evidence of a sexual assault in order to prove that the
defendant has the propensity to commit another sexual
USA V. PORTER 7
assault.” United States v. Redlightning, 624 F.3d 1090,
1119–20 (9th Cir. 2010). Federal Rule of Evidence 414
similarly allows the introduction of prior acts of child
molestation in a criminal case in which the defendant is
accused of that offense. Rule 415 extends Rules 413 and 414
to civil cases.
Importantly, these rules remain subject to Federal Rule
of Evidence 403. See United States v. Thornhill, 940 F.3d
1114, 1118 (9th Cir. 2019); Redlightning, 624 F.3d at 1119.
Under Rule 403, a district court may exclude relevant
evidence if “its probative value is substantially outweighed
by a danger of one or more of the following: unfair prejudice,
confusing the issues, misleading the jury, undue delay,
wasting time, or needlessly presenting cumulative
evidence.” Thus, “[b]efore admitting evidence of a prior
sexual assault, the district court must consider the Rule 403
factors,” as the district court did here. Redlightning, 624
F.3d at 1119 n.9.
There are several possible rationales for Congress’s
differential treatment of sexual assault and child molestation
cases. It may be that “propensity evidence has special value
in certain violent sexual misconduct cases,” in that persons
who commit these kinds of offenses could be more
predisposed to commit them again. United States v. Stout,
509 F.3d 796, 801–02 (6th Cir. 2007). It could also be that
unique problems of proof in these types of cases—victims’
inability to recall events, the lack of other percipient
witnesses, and defendants raising consent as a possible
defense—provide greater justification for using propensity
evidence to ensure rightful convictions. See id. at 802 (citing
“the difficulty” of obtaining convictions in sexual assault
cases as a justification for the 1994 rule additions); see also
8 USA V. PORTER
United States v. Enjady, 134 F.3d 1427, 1431 (10th Cir.
1998).
Porter argues that Rule 413 violates the Fifth
Amendment’s Due Process Clause. His basic argument is
that allowing evidence of criminal propensity is
fundamentally unfair, creating an unacceptable risk that
defendants will be convicted based on predisposition, not
wrongdoing.
Our decision in United States v. Lemay, 260 F.3d 1018
(9th Cir. 2001), compels us to reject Porter’s challenge. In
Lemay, we turned down a facial challenge to Federal Rule of
Evidence 414, the analogous rule allowing evidence of prior
child molestation in a criminal case charging that offense.
Id. at 1024–27. Our reasoning in Lemay applies with equal
force to Rule 413 and controls this case.
Lemay began by explaining that “[t]he Supreme Court
has cautioned against the wholesale importation of common
law and evidentiary rules into the Due Process Clause.” Id.
at 1024–25. Instead, we must “determine only whether the
action complained of violates those fundamental
conceptions of justice which lie at the base of our civil and
political institutions, and which define the community’s
sense of fair play and decency.” Id. at 1025 (quoting
Dowling v. United States, 493 U.S. 342, 353 (1990)). In
evaluating whether a rule is “so ‘fundamental’ as to be
embodied in the Constitution,” “the primary guide” is
“historical practice.” Id. (citing Montana v. Egelhoff, 518
U.S. 37, 43 (1996) (plurality opinion)); see also Kahler v.
Kansas, 589 U.S. 271, 279 (2020) (same).
Evaluating Rule 414 first from that historical
perspective, Lemay could not reach “a clear conclusion.”
260 F.3d at 1025. “On the one hand,” we observed, “it seems
USA V. PORTER 9
clear that the general ban on propensity evidence has the
requisite historical pedigree to qualify for constitutional
status.” Id. But “[o]n the other hand, courts have routinely
allowed propensity evidence in sex-offense cases, even
while disallowing it in other criminal prosecutions.” Id.
Here we cited historical evidence that “[i]n many American
jurisdictions, evidence of a defendant’s prior acts of sexual
misconduct is commonly admitted in prosecutions for
offenses such as rape, incest, adultery, and child
molestation.” Id. This included a so-called “lustful
disposition” exception, “which, in its purest form, is a rule
allowing for propensity inferences in sex crime cases.” Id.
at 1025–26; see also United States v. Harvel, 115 F.4th 714,
734 (6th Cir. 2024) (explaining that “many jurisdictions
soon developed a ‘lustful disposition’ exception that allowed
prosecutors to introduce a defendant’s other criminal acts in
sex-offense cases”). This ambiguous historical record cut
against the defendant in Lemay, who bore the burden of
showing that his preferred approach was so deeply rooted in
legal tradition that Rule 414 would violate due process. Id.
at 1025–26.
Lemay then conducted “an independent inquiry into
whether allowing propensity inferences violates
fundamental ideas of fairness.” Id. at 1026. On this score,
we held that “as long as the protections of Rule 403 remain
in place so that district judges retain the authority to exclude
potentially devastating evidence, Rule 414 is constitutional.”
Id. at 1027. With the guardrails of Rule 403, “there is
nothing fundamentally unfair about the allowance of
propensity evidence under Rule 414.” Id. at 1026.
Lemay offered several points in support of this
conclusion. We explained that past sexual misconduct is
“indisputably relevant” to whether the defendant committed
10 USA V. PORTER
the instant offense, and “[t]he introduction of relevant
evidence, by itself, cannot amount to a constitutional
violation.” Id. at 1026. By the same token, “the admission
of prejudicial evidence, without more, cannot be
unconstitutional,” because “[a]ll evidence introduced
against a criminal defendant might be said to be prejudicial.”
Id. Indeed, we noted, although Rule 404(b) disallows past
acts to show propensity, even that rule permits this evidence
for other purposes (such as proving motive, opportunity, or
intent), and Rule 403 has been considered a sufficient
backstop against constitutional violations in that context. Id.
at 1026–27.
The logic of Lemay extends to Rule 413. Although
Porter posits potential differences between child molestation
and sexual assault offenses, those differences are
insufficiently material. And they are ultimately irrelevant
under Lemay given the protections of Rule 403. Indeed, in
upholding Rule 414, Lemay relied on other circuits that
applied “nearly identical reasoning” in the case of Rule 413.
Id. at 1027. By the time of Lemay, the Eighth and Tenth
Circuits had rejected facial due process challenges to Rule
413. See United States v. Mound, 149 F.3d 799, 801 (8th
Cir. 1998); Enjady, 134 F.3d at 1433. Since Lemay, the
Second, Sixth, and Seventh Circuits have joined their ranks.
United States v. Schaffer, 851 F.3d 166, 177 (2d Cir. 2017);
Harvel, 115 F.4th at 736; United States v. Julian, 427 F.3d
471, 487 (7th Cir. 2005). We reaffirm Lemay and join the
other circuits in holding that Rule 413 does not violate due
process. When district courts retain discretion to exclude
unduly prejudicial propensity evidence under Rule 403, Rule
413 is constitutional. See Lemay, 260 F.3d at 1026–27.
We likewise reject Porter’s contention that Spencer v.
Texas, 385 U.S. 554 (1967), and Dowling v. United States,
USA V. PORTER 11
493 U.S. 342 (1989), counsel a different result than the one
reached by every circuit to consider Rule 413’s
constitutionality. Spencer and Dowling pre-date Rule 413
and did not address the same issues presented here.
Regardless, both cases found that “the trial court’s authority
to exclude potentially prejudicial evidence adequately
addresses” any “constitutionally unacceptable risk that the
jury will convict the defendant on the basis of” past conduct.
Dowling, 493 U.S. at 353; see also Spencer, 385 U.S. at 561–
62 (similar). Neither Spencer nor Dowling held that it would
be improper to admit propensity evidence in sexual assault
cases, much less when the evidence can be excluded under
Rule 403 and made the subject of appropriate limiting
instructions. We understand the objections to Rule 413, but
when the rule does not contravene due process, it is not our
role to refashion it.
Although we uphold Rule 413, we emphasize that Rule
413, like Rule 414, “is not a blank check entitling the
government to introduce whatever evidence it wishes.”
Lemay, 260 F.3d at 1022. District courts should carefully
apply Rule 403 in these circumstances, mindful of the five
non-exclusive factors we have identified: (1) “the similarity
of the prior acts to the acts charged,” (2) the “closeness in
time of the prior acts to the acts charged,” (3) “the frequency
of the prior acts,” (4) the “presence or lack of intervening
circumstances,” and (5) “the necessity of the evidence
beyond the testimonies already offered at trial.” Id. at 1028
(quoting Doe v. Glanzer, 232 F.3d 1258, 1268 (9th Cir.
2000)). As we explain in our accompanying memorandum
disposition, the district court here conscientiously evaluated
these factors and did not abuse its discretion in allowing
A.H.’s testimony subject to an appropriate limiting
instruction.
12 USA V. PORTER
Allowing A.H. to testify under Rule 413 thus did not
violate due process.
AFFIRMED.
Plain English Summary
FOR PUBLICATION UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT UNITED STATES OF AMERICA, No.
Key Points
01FOR PUBLICATION UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT UNITED STATES OF AMERICA, No.
02Thurston, District Judge, Presiding Argued and Submitted August 21, 2024 San Francisco, California Filed November 15, 2024 Before: Marsha S.
03PORTER SUMMARY * Criminal Law The panel affirmed Charles Porter’s conviction for various sexual assault offenses in Yosemite National Park in a case in which the panel addressed whether Federal Rule of Evidence 413, which allows propensity
04Rule 413 provides that “[i]n a criminal case in which a defendant is accused of a sexual assault, the court may admit evidence that the defendant committed any other sexual assault.” In United States v.
Frequently Asked Questions
FOR PUBLICATION UNITED STATES COURT OF APPEALS FOR THE NINTH CIRCUIT UNITED STATES OF AMERICA, No.
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