United States v. Arthur ( 2022 )


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  • Case: 21-50607     Document: 00516505567          Page: 1    Date Filed: 10/12/2022
    United States Court of Appeals
    for the Fifth Circuit                               United States Court of Appeals
    Fifth Circuit
    FILED
    October 12, 2022
    No. 21-50607                       Lyle W. Cayce
    Clerk
    United States of America,
    Plaintiff—Appellee,
    versus
    Thomas Alan Arthur,
    Defendant—Appellant.
    Appeal from the United States District Court
    for the Western District of Texas
    USDC No. 4:19-CR-774-1
    Before Davis, Dennis, and Higginson, Circuit Judges.
    Stephen A. Higginson, Circuit Judge:
    A jury convicted Thomas Alan Arthur of three counts of producing,
    distributing, receiving, and possessing an obscene visual depiction of a minor
    engaged in sexually explicit conduct, in violation of 18 U.S.C. § 1466A(a)(1);
    five counts of using an interactive computer service to transport obscene
    matters, in violation of 
    18 U.S.C. § 1462
    (a); and one count of engaging in the
    business of selling or transferring obscene matters, in violation of 
    18 U.S.C. § 1466
    (a). On appeal, Arthur challenges his conviction and sentence. We
    AFFIRM in part and REVERSE in part.
    Case: 21-50607      Document: 00516505567           Page: 2   Date Filed: 10/12/2022
    No. 21-50607
    I.
    From the 1990s through 2019, Thomas Alan Arthur operated a
    website called “Mr. Double.” At the time of the FBI investigation into
    Arthur, the website contained over 25,000 erotic stories, written by several
    thousand authors who contributed to the site. Many of the stories on the site
    included graphic depictions of rape, murder, and sexual abuse of children.
    Authors submitted stories to the site through a form or by email, and Arthur
    then uploaded the stories to the site. Authors could maintain a profile on the
    site that included a picture or avatar. While some content on the site was
    available to anyone for free, full access required a paid subscription.
    In November 2019, FBI agents executed a search warrant at Arthur’s
    home in Terlingua, Texas. That same month, Arthur was indicted by a
    federal grand jury in the Western District of Texas. A nine-count second
    superseding indictment was filed in October 2020. The second superseding
    indictment charged Arthur with three counts of producing, distributing,
    receiving, and possessing an obscene visual depiction of a minor engaged in
    sexually explicit conduct, in violation of 18 U.S.C. § 1466A(a)(1) (Counts 1,
    8, and 9); five counts of using an interactive computer service to transport
    obscene matters, in violation of 
    18 U.S.C. § 1462
    (a) (Counts 2, 3, 4, 5, and
    6); and one count of engaging in the business of selling or transferring
    obscene matters, in violation of 
    18 U.S.C. § 1466
    (a) (Count 7). Counts 1, 8,
    and 9 were premised on drawings used as profile pictures by three authors on
    Arthur’s website, while Counts 2-6 were premised on five separate stories
    posted on the site, though not written by Arthur. The Government also
    introduced two stories at trial written by Arthur, which formed part of the
    basis for the allegation in Count 7.
    On the day of trial, the district court held a Daubert hearing on
    Arthur’s proffered expert, Dr. David Ley. At the close of the hearing, the
    2
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    district court excluded Dr. Ley’s testimony.               The district court
    supplemented its oral ruling with a written order issued approximately three
    weeks after the trial. In the written order, the district court based its decision
    to exclude Dr. Ley’s testimony on his lack of qualifications and the lack of
    reliability in Dr. Ley’s methodology.
    After the Daubert hearing, the case proceeded immediately to trial.
    The Government called several federal and state agents and Arthur’s wife as
    witnesses. At the close of the Government’s case, Arthur moved for
    judgment of acquittal, arguing that the Government had proven neither that
    the stories and drawings lacked “political, scientific, artistic, or literary
    value,” see Miller v. California, 
    413 U.S. 15
    , 24 (1973), nor that the drawings
    charged depicted minors. The district court denied the motion. Arthur did
    not present a defense. The jury returned a guilty verdict on all nine counts.
    The PSR calculated a Guidelines range of 360 to 1080 months. The
    maximum term of imprisonment was twenty years on Counts 1, 8, and 9, and
    five years on Counts 2-7.       The district court sentenced Arthur to 240
    months’ imprisonment on Count 1 and 60 months’ imprisonment on Counts
    2, 3, 4, and 5, all to run consecutively to each other, as well as 60 months’
    imprisonment on Counts 6, 7, 8, and 9, to run concurrently, for a total of 480
    months’ imprisonment and three years’ supervised release. Arthur timely
    appealed.
    II.
    Arthur argues that the district court erred in denying his request to
    copy the charged materials. The district court denied Arthur’s motion on
    the ground that the charged materials constituted child pornography. See 
    18 U.S.C. § 3509
    (m).
    A district court’s discovery orders are reviewed for an abuse of
    discretion. United States v. Dailey, 
    868 F.3d 322
    , 327 (5th Cir. 2017). This
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    court “will not reverse on that basis unless a defendant establishes prejudice
    to his substantial rights.” 
    Id.
     (quoting United States v. Ellender, 
    947 F.2d 748
    ,
    756 (5th Cir. 1991)).
    Under the Federal Rules of Criminal Procedure, “[u]pon a
    defendant’s request, the government must permit the defendant to inspect
    and to copy or photograph books, papers, documents, data, photographs,
    tangible objects, buildings or places, or copies or portions of any of these
    items” that are “material to preparing the defense,” that the Government
    “intends to use . . . in its case-in-chief,” or that were “obtained from or
    belong[] to the defendant.” Fed. R. Crim. P. 16(a)(1)(E). However, 
    18 U.S.C. § 3509
    (m)(2)(A) prohibits courts from granting defendants’ requests
    to copy any “material that constitutes child pornography,” as defined in 
    18 U.S.C. § 2256
    . 1
    Before us, the parties rightfully agree that none of the charged
    materials meets the definition of child pornography. See § 2256(8). Though
    the district court’s contrary conclusion was error, Arthur has not met his
    burden to demonstrate that the error affected his substantial rights. Dailey,
    868 F.3d at 327. The Government made the charged materials available to
    1
    Section 2256(8) defines child pornography as:
    any visual depiction, including any photograph, film, video, picture, or computer
    or computer-generated image or picture, whether made or produced by electronic,
    mechanical, or other means, of sexually explicit conduct, where--
    (A) the production of such visual depiction involves the use of a minor
    engaging in sexually explicit conduct;
    (B) such visual depiction is a digital image, computer image, or computer-
    generated image that is, or is indistinguishable from, that of a minor engaging in
    sexually explicit conduct; or
    (C) such visual depiction has been created, adapted, or modified to appear that an
    identifiable minor is engaging in sexually explicit conduct.
    4
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    defense counsel and defense experts at the FBI offices in Midland and
    Alpine, Texas. Arthur makes general assertions that limiting the availability
    of the charged materials to an in-person visit to a West Texas FBI office
    during the COVID-19 pandemic prevented him from retaining experts to
    assist in the preparation of his defense. However, Arthur has not specified
    any particular expert who he wished to retain but was unable to due to the
    limited availability of the charged material. See United States v. Kimbrough,
    
    69 F.3d 723
    , 731 (5th Cir. 1995) (“His conclusory assertion that the amount
    of material seized and the time it took the Government agents to review the
    material demonstrates he was precluded from having an adequate
    opportunity to review the material and obtain an expert for trial is simply
    insufficient.”). In addition, three defense experts did view the materials at
    the FBI office. Therefore, Arthur has failed to show that he was prejudiced
    by the district court’s error.
    III.
    Arthur challenges two sentences in the district court’s jury
    instructions, which he argues impermissibly shifted the burden of proof and
    could have caused the jury to conflate the first two prongs of the Miller test. 2
    At trial, Arthur objected to the district court’s proposed instructions on these
    same grounds.
    “The district court’s decision to give or exclude a jury instruction is
    reviewed for abuse of discretion.” United States v. Ragsdale, 
    426 F.3d 765
    ,
    2
    In Miller, the Supreme Court articulated the current test for whether a work is
    obscene: “The basic guidelines for the trier of fact must be: (a) whether ‘the average
    person, applying contemporary community standards’ would find that the work, taken as a
    whole, appeals to the prurient interest; (b) whether the work depicts or describes, in a
    patently offensive way, sexual conduct specifically defined by the applicable state law; and
    (c) whether the work, taken as a whole, lacks serious literary, artistic, political, or scientific
    value.” 
    413 U.S. at 24
     (citations omitted).
    5
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    779 (5th Cir. 2005). “Failing to give a defendant’s suggested instruction is
    an abuse of discretion if the proposal is (1) substantively correct, (2) not
    ‘substantially covered’ in the jury charge, and (3) concerns ‘an important
    point in the trial so that the failure to give it seriously impairs the defendant’s
    ability to present effectively a particular defense.’” United States v. Spalding,
    
    894 F.3d 173
    , 188 (5th Cir. 2018) (citation omitted). A district court does not
    err, however, if the jury charge “tracks the Fifth Circuit Pattern Instructions
    and correctly states the law.” 
    Id.
     Further, “[a]ny error is subject to
    harmless-error review.” United States v. Cessa, 
    785 F.3d 165
    , 185 (5th Cir.
    2015). Even “erroneous jury instructions are harmless if a court, after a
    thorough examination of the record, is able to conclude beyond a reasonable
    doubt that the jury verdict would have been the same absent the error.”
    United States v. Stanford, 
    823 F.3d 814
    , 828 (5th Cir. 2016) (cleaned up); see
    also Pope v. Illinois, 
    481 U.S. 497
    , 501-02 (1987).
    Arthur challenges two sentences in the district court’s charge, drawn
    directly from the Fifth Circuit Pattern Jury Instructions, explaining the third
    prong of the Miller test: “An item may have serious value in one or more of
    these areas even if it portrays sexually oriented conduct. It is for you to say
    whether the material in this case has such value.” 3
    Arthur argues that the first challenged sentence collapsed the first and
    second prongs of the Miller test—whether the material appealed to the
    prurient interest and whether it portrayed sexual conduct in a patently
    offensive way—into one inquiry into whether the charged materials
    3
    Arthur proposed instead that the district court instruct: “An item may have
    serious value in one or more of these areas even if it portrays sexually oriented conduct in
    a patently offensive manner and appeals predominantly to the prurient interest. It is for
    you to say whether the material in this case lacks such value.” The district court denied
    Arthur’s request on the basis that the court’s proposed language was drawn directly from
    the Fifth Circuit Pattern Jury Instructions.
    6
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    “portray[ed] sexually oriented conduct.” However, he has not shown that
    the full sentence is a misstatement of the law. Spalding, 894 F.3d at 188.
    Moreover, the instructions that immediately followed emphasized the
    distinction between Miller’s three prongs and the requirement that all three
    be met in order for the jury to find the materials obscene. There was no error
    in the district court’s instruction.
    As for the second challenged sentence, Arthur argues that it shifted
    the burden of proof by instructing the jury to determine whether the charged
    material “has such value,” rather than whether it “lacks” such value. See
    Miller, 
    413 U.S. at 24
    . Even if this instruction were an incorrect statement of
    the law, any error was harmless. Cessa, 785 F.3d at 185. Taken as a whole,
    the instructions here clarified the burden of proof for the jury. See Francis v.
    Franklin, 
    471 U.S. 307
    , 318-19 (1985) (“The jury charge taken as a whole
    might have explained the proper allocation of burdens with sufficient clarity
    that any ambiguity in the particular language challenged could not have been
    understood by a reasonable juror as shifting the burden of persuasion.”). The
    district court repeatedly explained that the third prong of Miller requires a
    finding that the charged material “lacks” the requisite value and that it is the
    Government’s burden to prove that lack of value beyond a reasonable doubt.
    Thus, we are confident that if there was any error in the challenged sentence,
    it did not affect the jury’s understanding of the burden of proof or its verdict.
    IV.
    As he did in his motion for post-verdict judgment of acquittal, Arthur
    raises an as-applied constitutional challenge to his convictions on Counts 1,
    8, and 9, arguing that to survive scrutiny under the First Amendment, 18
    U.S.C. § 1466A(a)(1) must require that the charged images depict “real”
    minors.
    7
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    This court reviews questions of statutory interpretation and the
    constitutionality of federal statutes de novo. United States v. Arrieta, 
    862 F.3d 512
    , 514 (5th Cir. 2017); United States v. Rasco, 
    123 F.3d 222
    , 226 (5th
    Cir. 1997). A person violates § 1466A(a)(1) by “knowingly produc[ing],
    distribut[ing], receiv[ing], or possess[ing] with intent to distribute a visual
    depiction of any kind, including a drawing, cartoon, sculpture or painting that
    . . . depicts a minor engaging in sexually explicit conduct; and . . . is obscene.”
    The statute is explicit that, unlike in the context of child pornography,
    the minor depicted need not be a real minor. See § 1466A(c) (“It is not a
    required element of any offense under this section that the minor depicted
    actually exist.”). “When interpreting a statute, we are bound to ‘follow the
    plain and unambiguous meaning of the statutory language.’” United States
    v. Shabazz, 
    633 F.3d 342
    , 345 (5th Cir. 2011) (citation omitted). Section
    1466A(c) is plain and unambiguous. We conclude, therefore, that the statute
    does not require that the image depict a real minor.
    The fact that the statute does not require depiction of a real minor
    does not create a constitutional infirmity.                 Arthur argues that
    “[c]riminalizing depictions of fictitious characters of indeterminate age
    [would act] as an end-run around the Supreme Court’s decision in Ashcroft
    v. Free Speech Coalition.” In Free Speech Coalition, the Supreme Court struck
    down, as a violation of the First Amendment, a statute criminalizing any
    visual depiction of what “appears to be” a minor engaging in sexually explicit
    conduct, even if the image did not depict a real minor and was not obscene.
    
    535 U.S. 234
    , 241, 246, 258 (2002).               The statute at issue here is
    distinguishable from the statute struck down in Free Speech Coalition for the
    simple reason that §1466A(a)(1) requires that the visual depiction be
    obscene. And Free Speech Coalition did not change the longstanding rule that
    obscene speech is not protected by the First Amendment. See 
    535 U.S. at 245-46
     (“The freedom of speech has its limits; it does not embrace certain
    8
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    categories of speech, including defamation, incitement, obscenity, and
    pornography produced with real children.”); United States v. Williams, 
    553 U.S. 285
    , 293 (2008) (distinguishing the statute at issue in Free Speech
    Coalition from one that involves “obscene material depicting (actual or
    virtual) children engaged in sexually explicit conduct,” which is
    “constitutionally proscribable [under] Ferber and Miller”).
    Therefore, the fact that the charged drawings here do not depict real
    minors does not render Arthur’s convictions on Counts 1, 8, and 9
    unconstitutional.
    V.
    Because obscenity cases implicate rights protected by the First
    Amendment, we must “make an independent constitutional judgment as to
    the obscenity of the materials in question.” Ragsdale, 
    426 F.3d at 779
    ; see also
    Jacobellis v. Ohio, 
    378 U.S. 184
    , 190 (1964); Miller v. California, 
    413 U.S. 15
    ,
    25 (1973). 4 The parties agree that we must conduct this independent review
    of both the charged stories and images.
    Under the test articulated in Miller, a work is obscene if: (1) “‘the
    average person, applying contemporary community standards’ would find
    that the work, taken as a whole, appeals to the prurient interest,” (2) “the
    work depicts or describes, in a patently offensive way, sexual conduct
    specifically defined by the applicable state law,” and (3) “the work, taken as
    a whole, lacks serious literary, artistic, political, or scientific value.” 
    413 U.S. 4
    The Government reiterated at oral argument that our independent review is the
    only principle limiting the reach of the statutes charged here. Making our obligation to
    exercise this “independent constitutional judgment” all the more weighty, the
    Government stated its position at oral argument that all users of Arthur’s website—
    thousands, if not millions, of people—face felony exposure for possession of obscene
    material.
    9
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    at 24. The Supreme Court has held that “words alone can be legally
    ‘obscene,’” while noting that that Court “has always rigorously scrutinized
    judgments involving books for possible violation of First Amendment
    rights.” Kaplan v. California, 
    413 U.S. 115
    , 118 & n.3 (1973).
    After reviewing the charged materials—albeit with virtually no
    adversarial development at trial or on appeal on the first two prongs of Miller,
    as well as no expert opinion on any of the Miller prongs, and minimal district
    court effort at the Rule 29 stage to particularize the trial proof to the Miller
    prongs—we conclude that for Counts 2 through 9, the Miller test is satisfied. 5
    The stories and images, which graphically depict violent sexual acts and
    almost nothing else, are clearly intended to and do appeal to the prurient
    interest. See Ragsdale, 
    426 F.3d at 780
    . Given that the images in Counts 8
    and 9 depict the sexual abuse of prepubescent children and all of the charged
    stories describe in detail the repeated and protracted rape and torture of
    babies, infants, and adolescents, we can easily say that they describe sexual
    conduct “in a patently offensive way.” Miller, 413 U.S. at 24; Ragsdale, 
    426 F.3d at 781
    ; Penthouse Int’l, Ltd. v. McAuliffe, 
    610 F.2d 1353
    , 1366 (5th Cir.
    1980). Finally, the charged materials lack “serious literary, artistic, political,
    or scientific value.” Miller, 
    413 U.S. at 24
    . Unlike the works Arthur attempts
    to compare to, including The Color Purple and Lolita, the charged stories have
    “only the most tenuous ‘plot.’” Kaplan, 
    413 U.S. at 117
    . And neither the
    charged stories nor the images charged in Counts 8 and 9 attempt to be
    anything other than the “portrayal of hard-core sexual conduct for its own
    5
    Scholars have questioned whether the Miller standard, articulated in 1973, needs
    updating in the age of internet pornography, given that “[m]aterial that would certainly
    have been suppressed a few decades ago, and that would offend nearly every community,
    is now available in vast quantities.” Andrew Koppelman, Does Obscenity Cause Moral
    Harm?, 
    105 Colum. L. Rev. 1635
    , 1658 (2005); see also Amy Adler, All Porn All the Time,
    
    31 N.Y.U. Rev. L. & Soc. Change 695
    , 701-06 (2007).
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    sake.” Miller, 
    413 U.S. at 35
     (emphasis added); see also United States v.
    Bagnell, 
    679 F.2d 826
    , 837 (11th Cir. 1982) (“None of the films has a plot or
    any dialogue, nothing, in fact, save continual intercourse.”). Therefore, we
    affirm the jury’s findings on Counts 2 through 9 that the stories and images
    in question, extreme and violent depictions of sexual attacks on children, are
    obscene.
    However, as to Count 1, on our independent, de novo review, we are
    not satisfied that the charged image, which was admitted at trial as
    Government’s Exhibit 10A, is “patently offensive.” Miller, 413 U.S. at 24.
    While the charged images in Counts 8 and 9 are both detailed, color, cartoon-
    like drawings depicting pre-adolescent girls being forced to perform fellatio
    on disembodied and engorged male genitalia, the charged image in Count 1 is
    a simple black and white pencil or charcoal drawing with minimal detail
    depicting an adolescent girl alone, reclining and apparently masturbating. 6
    Importantly, unlike the children depicted in the images in Counts 8 and 9,
    there is no indication that the subject of the image in Count 1 is being forced
    to perform a sexual act. The drawing is simple and utterly lacking in violent
    depictions. Our independent constitutional review of the image charged in
    Count 1 leads us to the conclusion that it is not obscene under Miller. We
    therefore reverse Arthur’s conviction on Count 1.
    VI.
    Finally, Arthur argues that the district court erred in excluding his
    expert witness, Dr. David Ley, a licensed clinical psychologist and sex
    6
    The Government’s position at oral argument that any drawing, fully fictional, of
    an adolescent masturbating constitutes felony obscenity is untenable in light of the fact-
    specific nature of the Miller test.
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    therapist, who intended to testify about the literary, artistic, and scientific
    value of the charged stories and images. Miller, 413 U.S. at 24.
    A.
    This court reviews “the admission or exclusion of expert testimony
    for an abuse of discretion.” Huss v. Gayden, 
    571 F.3d 442
    , 452 (5th Cir.
    2009); see also United States v. Cavin, 
    39 F.3d 1299
    , 1309 (5th Cir. 1994). The
    district court’s “ruling will be upheld unless it was ‘manifestly erroneous.’”
    Carlson v. Bioremedi Therapeutic Sys., Inc., 
    822 F.3d 194
    , 199 (5th Cir. 2016)
    (quoting United States v. Valencia, 
    600 F.3d 389
    , 423 (5th Cir. 2010)). Even
    if the district court abused its discretion, “we will still affirm if the error did
    not affect the substantial rights of the complaining party.” Carlson, 822 F.3d
    at 202. “When assessing whether an error affected a substantial right of a
    defendant, the necessary inquiry is whether the trier of fact would have found
    the defendant guilty beyond a reasonable doubt with the additional evidence
    inserted.” United States v. Wen Chyu Liu, 
    716 F.3d 159
    , 169 (5th Cir. 2013)
    (cleaned up). “We must, though, be ‘sure, after reviewing the entire record,
    that the error did not influence the jury or had but a very slight effect on its
    verdict.’” 
    Id.
     (quoting Kelly v. Boeing Petroleum Servs., Inc., 
    61 F.3d 350
    , 361
    (5th Cir.1995)).
    Although “[e]xpert testimony is not necessary to enable the jury to
    judge the obscenity of material which, as here, has been placed into
    evidence,” Hamling v. United States, 
    418 U.S. 87
    , 100 (1974), the Supreme
    Court has also said that in an obscenity case, “[t]he defense should be free to
    introduce appropriate expert testimony,” Kaplan v. California, 
    413 U.S. 115
    ,
    121 (1973).
    Federal Rule of Evidence 702 permits opinion testimony from a
    witness “qualified as an expert by knowledge, skill, experience, training, or
    education” if the proponent shows by a preponderance that the testimony
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    (1) “will help the trier of fact to understand the evidence or to determine a
    fact in issue,” (2) “the testimony is based on sufficient facts or data,”
    (3) “the testimony is the product of reliable principles and methods,” and
    (4) “the expert has reliably applied the principles and methods to the facts of
    the case.” Fed. R. Evid. 702. A trial judge “must ensure that any and all
    scientific testimony or evidence admitted is not only relevant, but reliable.”
    Daubert v. Merrell Dow Pharmaceuticals, Inc., 
    509 U.S. 579
    , 589 (1993); United
    States v. Kuhrt, 
    788 F.3d 403
    , 419-20 (5th Cir. 2015).
    B.
    Minutes before trial began, the district court excluded Arthur’s only
    witness, Dr. Ley, 7 based on two conclusions: (1) that he was not qualified to
    testify as an expert, and (2) that the methodology he used to form his opinion
    was not reliable. The district court’s exclusion of Dr. Ley’s testimony on
    these grounds was an abuse of discretion.
    1.
    The district court concluded that Dr. Ley was not qualified to testify
    about the artistic or literary value of the charged material because he did not
    have a degree in art or literature. The district court concluded that Dr. Ley
    was not qualified to testify about the scientific value of the charged materials
    because his expertise was not specifically in “depictions of the sexual abuse
    of babies and/or children,” but rather in pornography and erotic drawings
    more generally.
    7
    Even though defense counsel objected that “Dr. Ley was . . . our entire case,”
    Arthur has not argued to us that he was denied his constitutional right to present a complete
    defense, see California v. Trombetta, 
    467 U.S. 479
    , 485 (1984), and thus we do not consider
    that question.
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    First, Dr. Ley was not required to have a degree in art or literature to
    testify about the artistic or literary value of the charged materials, so long as
    he was qualified based on one or more of the other bases in Rule 702. See
    Fed. R. Evid. 702 (“A witness who is qualified as an expert by knowledge,
    skill, experience, training, or education may testify in the form of an opinion
    . . . .” (emphasis added)); see also Wen Chyu Liu, 716 F.3d at 168 (“A lack of
    personal experience—the district court’s concern here—should not
    ordinarily disqualify an expert, so long as the expert is qualified based on
    some other factor provided by Rule 702 . . . .”); Carlson, 822 F.3d at 200 (“A
    medical degree is not a prerequisite for expert testimony relating to medicine.
    For example, we have held that scientists with PhDs were qualified to testify
    about fields of medicine ancillary to their field of research. ”).
    Dr. Ley was qualified to testify about the artistic and literary value of
    the charged materials based on his knowledge and experience. He testified
    that he had experience giving presentations about “the history of eroticism
    in literature and art” as part of his media appearances and work training other
    sex therapists.     He also testified that he had written a book about
    pornography, which contributed to his knowledge of the “role of art with
    erotic literature.” In his expert report, Dr. Ley stated that as part of his
    “clinical and research” work, he had reviewed “media related to sexuality,”
    including “photographs, videos, drawings, and textual accounts in both
    fictional and non-fictional formats.” Dr. Ley’s experience and familiarity
    with erotic art and literature, which stemmed from his decades of work as a
    clinical psychologist and sex therapist, rendered him qualified to testify about
    the literary and artistic value of the charged stories and images. And “Rule
    702 does not mandate that an expert be highly qualified in order to testify
    about a given issue. Differences in expertise bear chiefly on the weight to be
    assigned to the testimony by the trier of fact, not its admissibility.” Huss, 571
    14
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    No. 21-50607
    F.3d at 452. As such, Dr. Ley’s lack of degree in art or literature bears on the
    weight of the evidence, “not its admissibility.” Id.
    Second, the district court required a degree of specificity in Dr. Ley’s
    expertise that finds no support in our precedent.          The district court
    concluded that Dr. Ley was not qualified to testify about the scientific value
    of the charged materials because his expertise was not specifically in
    “depictions of the sexual abuse of babies and/or children,” but rather in
    pornography and erotic drawings more generally.                However, “an
    expert witness is not strictly confined to his area of practice, but may testify
    concerning related applications; a lack of specialization does not affect the
    admissibility of the opinion, but only its weight.” Wen Chyu Liu, 716 F.3d at
    168-69 (citation omitted). For that reason, we have repeatedly found error in
    district court rulings that exclude experts on the basis of lack of
    specialization. For example, in Huss, we rejected a district court’s conclusion
    that an internal medicine doctor was not qualified to testify about the
    relationship between a particular drug and the plaintiff’s heart condition. Id.
    at 454-55. The physician’s “education and knowledge”—he had medical
    and public health degrees and testified that he had experience with the
    subject heart condition—qualified him to testify, despite his lack of
    specialization in cardiology or toxicology and his lack of experience with the
    particular drug at issue. Id. at 453, 455; see also Wen Chyu Liu, 716 F.3d at
    166, 168-69 (finding error in the exclusion of “an expert in chemical
    engineering, process design, and project engineering,” based on a lack of
    experience with the specific type of chemical plant at issue); Dixon v.
    International Harvester Co., 
    754 F.2d 573
    , 579-80 (5th Cir. 1985) (holding that
    an engineer who “had experience in investigating crane, tractor, and
    automobile accidents” was qualified to testify about a “crawler tractor”
    accident despite not having specific experience with crawler tractors).
    15
    Case: 21-50607        Document: 00516505567              Page: 16       Date Filed: 10/12/2022
    No. 21-50607
    Here, Dr. Ley was a licensed clinical psychologist and board-certified
    sex therapist with a master’s degree in psychology, a PhD in clinical
    psychology, and twenty years of experience, including in the clinical
    treatment of people with “sexual attraction to children” and “a history of
    sex offending” as well as in pornography and its use in clinical treatment. As
    such, Dr. Ley was not required to be an expert in “depictions of the sexual
    abuse of babies and/or children” specifically because his testimony regarding
    those materials, and the scientific literature about them, is clearly a “related
    application” of his expertise. Wen Chyu Liu, 716 F.3d at 169. It is also notable
    that in one of the few obscenity cases this court has decided in recent decades,
    the district court did allow the defendant to introduce the expert testimony
    of a sex therapist. Ragsdale, 
    426 F.3d at 771-72
    . To the extent Dr. Ley lacked
    experience with the specific type of material charged in this case, that “lack
    of specialization does not affect the admissibility of the opinion, but only its
    weight.” 
    Id.
    Dr. Ley was qualified to testify as an expert about the literary, artistic,
    and scientific value of the charged materials in this case, Miller, 
    413 U.S. at 24
    , and the district court’s exclusion of the testimony on that ground was an
    abuse of discretion.
    2.
    Likewise, the district court’s conclusion that Dr. Ley’s methodology
    was unreliable was manifestly erroneous. Carlson, 822 F.3d at 199. 8
    First, as to the artistic and literary value of the charged materials, Dr.
    Ley’s expert report compared the charged stories and drawings, including
    8
    To the extent that the district court relied on Dr. Ley’s lack of qualifications to
    conclude that his opinion was unreliable, that reliance was manifestly erroneous because,
    as discussed above, Dr. Ley, a PhD and licensed clinical psychologist, was qualified.
    16
    Case: 21-50607       Document: 00516505567             Page: 17      Date Filed: 10/12/2022
    No. 21-50607
    specific elements in each, to literature and art that is generally accepted as
    having serious artistic or literary value. 9 The district court faulted Dr. Ley
    for failing to “explain how measuring the material against other work led him
    to conclude that the material charged has serious artistic value.”
    Determining whether a work has serious literary or artistic value is not a
    strictly scientific inquiry. See Kumho Tire Co., Ltd. V. Carmichael, 
    526 U.S. 137
    , 150 (1999) (explaining that the factors to consider in determining
    reliability of expert testimony “depend[] upon the particular circumstances
    of the particular case at issue”).           Neither the district court nor the
    Government has explained why this comparative method is unreliable, and,
    as a matter of common sense, comparing the content, as well as the literary
    and artistic devices used, in the charged materials with works a reasonable
    person would understand as having literary or artistic value is a logical
    method for determining whether a reasonable person would also interpret the
    charged materials as having such value. See Pope v. Illinois, 
    481 U.S. 497
    , 500-
    01 (1987) (holding that Miller’s third prong is a “reasonable person”
    standard); see also Amy Adler, The Shifting Law of Sexual Speech: Rethinking
    Robert Mapplethorpe, 
    2020 U. Chi. Legal F. 1
    , 10-11, 20-21, 24-25
    (arguing that Robert Mapplethorpe’s photographs presented an easy case of
    “serious artistic value” by comparing his work to classical Greek sculpture
    and Caravaggio).
    9
    Whether the defense’s expert could have used comparison between the charged
    materials and other works of literature and art as a method to show that the charged
    materials had literary or artistic value (Miller prong three) is a separate question from
    whether the defense can introduce “comparable material” as evidence of “community
    standards” (Miller prongs one and two). See Hamling v. United States, 
    418 U.S. 87
    , 125-27
    (1974) (upholding exclusion of “comparable materials” used as evidence of “community
    standards”); Ragsdale, 
    426 F.3d at 776
     (same).
    17
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    No. 21-50607
    Second, the district court found that Dr. Ley’s opinion on the
    scientific value of the charged materials was unreliable because Dr. Ley
    testified that (1) he would have been better able to assess their full value if he
    had viewed the materials in the context of the entire website, and (2) he knew
    of no clinician who had prescribed similar materials as treatment for any
    patient. Neither of these statements establishes that Dr. Ley’s methodology
    was unreliable. First, Dr. Ley’s testimony that he would have been better
    able to assess the value of the material if he had viewed it in the context of the
    entire website was based not on any scientific concern but rather on his
    understanding of the Miller test, which requires consideration of whether the
    work “taken as a whole” lacks the requisite value. 413 U.S. at 24. Second,
    whether Dr. Ley knew of any clinician who had prescribed similar material as
    treatment does nothing to undermine the reliability of the studies that Dr.
    Ley cited in his report or the admissibility of his testimony about those
    studies. The district court’s reasoning does not support the conclusion that
    Dr. Ley’s methodology—analyzing published studies in his field that discuss
    the scientific value of materials similar to those charged here—was
    unreliable.
    Dr. Ley’s expert report cited numerous published studies examining
    the scientific and clinical uses of narrative accounts of sexual abuse, and Dr.
    Ley testified that these studies used methods commonly accepted in the
    fields of sex therapy and clinical psychology. See United States v. Hodge, 
    933 F.3d 468
    , 477 (5th Cir. 2019) (“Factors that might inform whether testimony
    is reliable ‘include whether the expert’s theory or technique: (1) can be or has
    been tested; (2) has been subjected to peer review and publication; (3) has a
    known or potential rate of error or standards controlling its operation; and
    (4) is generally accepted in the relevant scientific community.’”). In the
    absence of any evidence that the studies Dr. Ley discussed in his expert
    report were, for example, irrelevant, see Pipitone v. Biomatrix, Inc., 
    288 F.3d 18
    Case: 21-50607     Document: 00516505567            Page: 19     Date Filed: 10/12/2022
    No. 21-50607
    239, 244 (5th Cir. 2002) (“[E]xpert testimony is admissible only if it is both
    relevant and reliable.”), not “generally accepted in the relevant scientific
    community,” Hodge, 933 F.3d at 477, or methodologically flawed, see Wells v.
    SmithKline Beecham Corp., 
    601 F.3d 375
    , 380-81 (5th Cir. 2010) (holding that
    expert opinion was unreliable in part because it was “not backed by studies
    meeting requisite scientific standards”), there is no support for the
    conclusion that Dr. Ley’s opinion—formed based on analysis of the relevant
    scientific literature—was unreliable.       Thus, the district court abused its
    discretion in excluding Dr. Ley’s testimony on the scientific value of the
    charged materials.
    C.
    Although the district court’s exclusion of Arthur’s “entire case”—
    opinion testimony about the artistic, literary, and scientific value of the
    charged materials, which was necessarily counterintuitive—was an abuse of
    discretion, “we will not vacate a conviction based on an error committed by
    the district court unless the error was harmful, affecting a substantial right of
    the complaining party.” Wen Chyu Liu, 716 F.3d at 169; see also United States
    v. Kuhrt, 
    788 F.3d 403
    , 420-22 (5th Cir. 2015). As discussed above, the
    charged materials in Counts 2 through 9 are so easily distinguishable from
    well-known works of art and literature depicting rape, child abuse, and incest
    that we are certain Dr. Ley’s proposed testimony comparing the charged
    materials to these works would not have convinced the jury that the charged
    materials have serious literary or artistic value.          Similarly, Dr. Ley’s
    testimony about the scientific value of the charged materials would not have
    altered the verdict. The fact that researchers have studied similar materials
    does not mean the materials themselves, taken as a whole, have serious
    scientific value, even if the resulting studies, published in scientific journals,
    do. We are sure, after reviewing the entire record, that the district court’s
    exclusion of Dr. Ley’s testimony “did not influence the jury or had but a very
    19
    Case: 21-50607     Document: 00516505567           Page: 20   Date Filed: 10/12/2022
    No. 21-50607
    slight effect on its verdict.” Carlson, 822 F.3d at 202; see also United States
    v. Roberts, 
    887 F.2d 534
    , 537 (5th Cir. 1989) (“[I]t is clear that even if the
    district court had admitted the proffered testimony, it would not have
    changed [the] determination of Roberts’ guilt.”).
    VII.
    For the foregoing reasons, we AFFIRM the convictions on Counts 2
    through 9, REVERSE the conviction on Count 1, and REMAND for
    resentencing.
    20
    Case: 21-50607        Document: 00516505567                Page: 21        Date Filed: 10/12/2022
    No. 21-50607
    James L. Dennis, Circuit Judge, concurring in part, dissenting in part:
    I concur in my learned colleague’s thorough and careful opinion
    except for Section V’s independent judgment with respect to the obscene
    nature of the charged material in Counts 2 through 9, 1 and Section VI.C, from
    which I respectfully dissent. I am not persuaded that the Government has
    carried its burden of demonstrating that the erroneous exclusion of Arthur’s
    sole witness was harmless. In particular, two aspects of the excluded evidence
    combine to leave me “in grave doubt” that the district court’s error did not
    have a substantial influence on the jury’s decision-making. Kotteakos v.
    United States, 
    328 U.S. 750
    , 765 (1946). 2 The first is the special role of expert
    testimony in establishing a defense on the third prong of the Miller test. The
    second is that Dr. Ley’s testimony was the only evidence supporting
    Arthur’s theory of defense—it was his “entire case.” Maj. Op. at 20. Our
    court has held that this combination—the exclusion of expert evidence on
    specialized issues of facts and the total absence of other evidence on those
    1
    I agree with the majority that the charged material in Count 1, a charcoal drawing
    of a reclining female apparently masturbating, is not obscene under independent judicial
    review. Because the district court excluded expert testimony that, as I explain below, is
    central to the Miller issue in this case, the record is insufficiently developed to conduct a de
    novo review of Arthur’s Miller challenge to the charged material in the remaining counts. I
    would therefore deny Arthur’s constitutional claims without prejudice, preferring to
    pretermit our independent judicial review until the record is sufficiently developed. United
    States v. Cervantes, 
    706 F.3d 603
    , 621 (5th Cir. 2013).
    2
    I also have doubts as to whether the Kotteakos or Chapman harmless error
    standard should apply here. The latter, of course, is reserved for cases where error affects
    a defendant’s constitutional rights, and it requires that the Government prove the error to
    be harmless “beyond a reasonable doubt.” Chapman v. California, 
    386 U.S. 18
    , 24 (1967).
    Depriving a defendant of his sole witness and entire defense arguably is an error of
    “constitutional magnitude,” implicating both Sixth Amendment and Due Process rights.
    United States v. Rhynes, 
    218 F.3d 310
    , 323 (4th Cir. 2000) (en banc). However, even under
    Kotteakos’s standard for non-constitutional errors, I believe the Government has failed to
    carry its burden of proof.
    21
    Case: 21-50607      Document: 00516505567            Page: 22    Date Filed: 10/12/2022
    No. 21-50607
    issues—constitutes reversible error. See United States v. Alexander, 
    816 F.2d 164
    , 167 (5th Cir. 1987). Accordingly, I would deem the district court’s error
    not harmless, and reverse and remand for a new trial.
    It is well-settled that the Government need not present expert
    testimony to establish that charged material lacks serious literary, artistic,
    political, or scientific value. Kaplan v. California, 
    413 U.S. 115
    , 121 (1973). But
    it is equally well-settled that a defendant “should be free to introduce
    appropriate expert testimony” in order to prove the opposite, that the
    material possesses this redeeming value. 
    Id.
     (citing Smith v. California, 
    361 U.S. 147
    , 164–65 (1959) (Frankfurter, J., concurring)). This is because,
    though the jury is the ultimate finder of fact, determining whether certain
    material has literary, social, or scientific value may require a specialized kind
    of knowledge that a layperson does not have. Scientific consensus, especially,
    often runs counter to conventional wisdom on many issues. See, e.g.,
    Alexander, 
    816 F.2d at 167
     (expert testimony necessary for jury to assess
    accuracy of photographic identification because lay identification unreliable).
    This very well may have been the case here, where Arthur sought to
    introduce evidence through Dr. Ley that the charged material—erotica
    describing child rape, abuse, and torture—has been shown to have
    therapeutic benefits for some individuals suffering pedophilic disorder and
    can reduce the likelihood of offending against children. The social benefit of
    otherwise shockingly depraved material is hardly apparent, I would venture,
    to the average person unacquainted with the latest clinical psychiatric
    research. See United States v. Soler-Montalvo, 
    44 F.4th 1
    , 19 (1st Cir. 2022)
    (exclusion of expert testimony that charged conduct was fantasy role-playing
    behavior, not child sexual predation, was not harmless). Dr. Ley’s testimony
    would have provided precisely this information to the jury, thus aiding them
    in answering the question posed by Miller as to whether the charged material
    lacks serious literary, social or scientific value. I cannot say that this evidence
    22
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    No. 21-50607
    would not “have had ‘substantial influence’ on the outcome” of the trial.
    Bank of Nova Scotia v. United States, 
    487 U.S. 250
    , 256 (1988) (quoting
    Kotteakos, 
    328 U.S., at 765
    ).
    Nor can I say that the total absence of any evidence from the defense
    on this issue did not substantially affect the jury’s decision-making. Arthur’s
    defense—indeed, his only defense—was that the charged material failed
    Miller’s third prong. By excluding Dr. Ley’s testimony, the district court
    eliminated Arthur’s only chance to challenge the Government on an issue
    central to his guilt. At trial, the Government presented no evidence other
    than the charged material itself to prove Miller’s third prong. Thus, Arthur
    could not challenge the Government’s case through cross-examination or
    confrontation; the only means he had to defend himself against the charges
    was introducing evidence establishing the First Amendment values of the
    charged material. Though our court has never ruled on the question of
    whether the erroneous exclusion of evidence that is central to the defense is
    harmless, there is robust agreement among many of our sister circuits that
    such an error cannot be harmless. See United States v. Peak, 
    856 F.2d 825
    , 834
    (7th Cir. 1988) (“When erroneously excluded evidence would have been the
    only or primary evidence in support of or in opposition to a claim or defense,
    its exclusion is deemed to have had a substantial effect on the jury.”); United
    States v. Detrich, 
    865 F.2d 17
    , 21 (2d Cir. 1988) (“[T]he excluded evidence is
    probative on the trial’s central issue, and lends support to the theory of the
    defense.”); United States v. Forrester, 
    60 F.3d 52
    , 64–65 (2d Cir.1995)
    (“Error going ‘to the heart’ of a critical issue is less likely to be harmless.”)
    (citing United States v. Tussa, 
    816 F.2d 58
    , 67 (2d Cir.1987)); Rhynes, 
    218 F.3d at 323
    . This position strikes me as obviously correct. The harmless error
    standard requires that we reverse unless we are “sure, after reviewing the
    entire record, that the error did not influence the jury or had but a very slight
    effect on its verdict.” Kelly v. Boeing Petroleum Servs., Inc., 
    61 F.3d 350
    , 361
    23
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    No. 21-50607
    (5th Cir.1995). I fail to see how one could be sure on any record—let alone
    this one—that excluding the entirety of the defense’s case did not influence
    the jury.
    Were there any doubt as to the magnitude of the harm of excluding a
    defendant’s Miller expert or of excluding the entirety of his defense taken
    individually, there should be none when a district court’s error results in
    both. In United States v. Alexander, our court confronted a similar kind of
    erroneous evidentiary ruling and deemed it reversible. There, the defendant
    was charged with bank robbery. The sole evidence linking him to the crime
    was a photographic still of security camera footage of the robber, which three
    bank employees identified as being of the defendant. 
    816 F.2d at 166
    . The
    defendant sought to introduce two experts in sciences related to
    photographic comparison, but the district court excluded them, reasoning
    that the jury did not need expert assistance in evaluating the photograph in
    evidence. 
    Id. at 167
    . This was in error, our court held, because “the entire
    case . . . turned on the photographic identification.” 
    Id. at 169
    . And although
    the opinion did not conduct a harmless error analysis, “because of the
    specific nature of the [excluded expert testimony] in this case, together with
    the complete lack of any evidence other than the eyewitness identification,”
    it held that the district court’s error warranted reversal. 
    Id. at 167
    . Arthur’s
    case presents the same concerns. The entire case turned on whether the
    charged material lacked serious literary, artistic, political, or scientific value.
    The specific nature of the excluded testimony could have significantly
    swayed a jury’s determination of this issue. And aside from the charged
    material itself, whose allegedly obscene nature Dr. Ley’s testimony would
    undermine, there was no other evidence to satisfy Miller’s third prong. I
    would thus follow Alexander and conclude that the district court’s error was
    not harmless.
    I respectfully dissent.
    24