PUBLISHED
UNITED STATES COURT OF APPEALS FOR THE FOURTH CIRCUIT

No. 2 2

- 4242

UNITED STATES OF AMERICA,
Plaintiff

– Appell ee ,

v. ZACKARY ELLIS SANDERS , Defendant

– Appell ant

.

Appeal from the United States District Court for the Eastern District of Virginia , at Alexandria

. T. S. Ellis III , Senior District Judge. ( 1:20

- cr - 00143

- TSE

- 1 )

A rgued : March 22, 2024 Decided: July 9, 2024

Before NIEMEYER, KING and BENJAMIN , Circuit Judges

. Affirmed by published opinion. Judge King wrote the opinion , in which Judge Niemeyer and Judge Benjamin joined.

ARGUED: Lawrence Robbins, FRIEDMAN KAPLAN SEILER ADELMAN & ROBBINS LLP, New York, New York, for Appellant. Joseph Attias, OFFICE OF THE UNITED STATES ATTORNEY, Richmond, Virginia, for Appellee. ON BRIEF: Brandon L. Arnold, Leslie C. Esbrook, KRAMER LEVIN ROBBINS RUSSELL, Washington, D.C., for Appellant. Jessica D. Aber, United States Attorney, Aidan Taft Grano

- Mickelsen, Assistant United States Attorney, Richmond, Virginia, William G. Clayman, Special Ass istant United States Attorney, Jay V. Prabhu, As sistant United States USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 1 of 512 Attorney, Seth M. Schlessinger, Assistant United States Attorney, OFFICE OF THE UNITED STATES ATTORNEY, Alexandria, Virginia, for Appellee. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 2 of 513 KING, Circuit Judge: Following a jury trial in October 2021 in the Eastern District of Virginia, defendant Zackary Ellis Sanders was convicted of five offenses involving the illegal production of child pornography, six offenses involving the illegal receipt of child pornography, and a single offense for illegal possession of child pornography. The district court sentenced Sanders to 216 months in prison. Sanders now pursues a multifaceted appeal , maintaining
that the court committed reversible error at nearly every stage of the underlying proceedings. Sanders’s appellate contentions broadly manifest in four different forms

— first,
that the district court erred in denying motion s to suppress evidence seized pursuant to a search warrant for his residence , plus Sanders’s related efforts to inquire into alleged misrepresentations in the affidavit supporting the issuance of that warrant ; second, that the

court erred in admit ting statements Sander s made to FBI agents during the search of his
residence ; third, that the court improperly excluded purported evide nce of the victims ’ voluntary participation in the production of child pornography, including expert testimony
about a so - called “ BDSM culture; ” 1 and , fo u rth, that the court erred in giving three types of challenged jury instructions.

1 The acronym “BDSM” relates to the conduct of Sanders and the minor victims, and has been used by the lawyers throughout the district court proceedings and in the briefs, allegedly standing for bondage, discipline, dominance, submission, sadism, and masochism. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 3 of 514 As explained herein, we reject each of Sanders ’ s appellate contentions and affirm the judgment of the district court

.

I. Before reviewing the procedural history and assessing the legal issues presented, we
will summarize the pertinent facts. The facts and reasonable inferences drawn therefrom are recited in the light most favorable to the Government, as the prevailing party at trial
and in the suppression proceedings

. See United States v. Burgos , 94 F.3d 849, 854 (4th Cir. 1996) (regarding jury verdict); United States v. Jones , 356 F.3d 529, 533 (4th Cir. 2004) (regarding suppression hearing).
A.
1. In August 2019 , a law enforcement agency in another country (the “ Foreign Agency ” ) provided an intelligence report to the FBI, advising that a specific Internet
Protocol address (an “IP address”) had accessed “child sexual abuse and exploitation
material.” 2 See J.A. 1406. 3 T h e report of the Foreign Agency further advised that this particular IP address, on May 23, 2019, at approximately 10:00 PM EST :

2 An IP address is a unique numerical figure that identifies an electronic device accessing the Internet , and it is used to route information between Internet

- connected devices.

3 Citations herein to “J.A. ___” refer to the contents of the Joint Appendix filed by the parties in this appeal. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 4 of 515 [W]as used to access online child sexual abuse and exploitation material, with an explicit focus on the facilitation of sharing child abuse material (images, links and videos), emphasis on BDSM, hurtcore, gore, and death

related material including that of children. Users were required to create an account (username and password) in order to access the majority of the material.
Id

. (the “ August Report ” ). 4 A month later, in September 2019, the FBI received a second report from the Foreign Agency . This submission represented to the FBI that the information provided in
the August Report was “lawfully obtained” pursuant to a warrant

. See J.A. 1408. Additionally, it advised that “ at no time was any computer or device interfered with in the
United States , ” and that the Foreign Agency “ did not access, search or seize any dat a from any computer in the United States. ” Id

. Soon thereafter , the Foreign Agency named and described the website that the subject IP address had used to access the child pornography

— entitled “ Hurt Meh

. ” The
Hurt Meh website is a so

- called “ TOR h idden s ervice. ” The term “ TOR ” is a reference to
the TOR network

— a unique network that routes an Internet user ’ s communications over
the Internet through a randomly assigned path of relay computers. The purpose of the TOR
network is to mask the IP address of the Internet user. If a n Internet user wishes to access the TOR network, he must use the “TOR
browser”

— which can be obtained for free by downloading it from the private entity that

4 The website at issue defines “hurtcore” as “rape, fighting, wrestling, bondage, spanking, pain, mutilation, gore, dead bodies, and etc., (no limits).” See J.A. 1445. The term “hurtcore” is thus a reference to violent pornography. Id. at 1444. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 5 of 516 maintains the TOR network. When using the TOR browser, an Internet user can access “open” Internet website s

— such as google.com or wikipedia.org. The TOR browser, however, makes it possible for users to access websites that are accessible only to users operating within the TOR network. These TOR

- based websites are called “hidden
services.” See J.A. 1443. And, as identified above, Hurt Meh was one of these hidden
services.
There are additional differences between TOR

- based hidden services and open
websites. The web site addresses of a TOR hidden service are comprised of a string of randomly generated characters followed by a n “ .onion ” suffix. The nature of hidden TOR

based services mean s that they are “ much more difficult ” to locate through a typical
Internet search, as compared to an open Internet website. See J.A. 1448. Usually, to locate

a specific hidden service, a TOR user would have to access a TOR directory

— which is
also a TOR hidden service

— that would identify and advertise the web addresses for multiple other hidden services. Th ese combined features creat e anonymity and obscurity , mak ing TOR hidden services, the TOR browser, and the TOR network, very appealing
vehicle s for criminal activity . They have particularly been a boon for the online sexual exploitation of children.
Hurt Meh is one such website . It is an online bulletin board, dedicated to the advertisement and distribution of child pornography, and it was operational from July 2016 USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 6 of 517 until June 2019. 5 T he home page for the Hurt Meh web site contained a search bar and various links, including a link titled “Announcements.” See J.A. 1777. If a TOR user
clicked on the “Announcements” link , a message called “ Welcome, Please read before registering ” would be visible. Id. at 1444. The content of the message provided: Welcome abusers and abusees and those that enjoy watching. This website was created to host videos, photos and discussions of 18 (twinks) and younger of Hurtcore materials ( videos & pictures) as well as discussion of such

. . . . PS Please register to see all the forums, and use strong password for user profile.
Id. No pornographic material was displayed on Hurt Meh ’ s home page. To access such material, the TOR user had to create a username and password.
The FBI was well aware of the above

- described nature of Hurt Meh and TOR when
it received the initial reports from the Foreign Agency . Notably, the FBI and other domestic law enforcement agen cies had a longstanding relationship with th e Foreign Agency and had developed a regular and mutually beneficial practice of sharing reliable investigative information concerning TOR users who appear to be engaged in online sexual exploitation. See J.A. 1448.
2. Based on the foregoing, the FBI opened an investigation into the IP address
identified in the August R eport. The IP address was associated with a n 11,000

- square - foot
mansion in McLean, Virginia, where the then 24

- year - old defendant Zackary Sanders was

5 Hurt Meh’s operation ceased i n June 2019, when a n unidentified foreign law enforcement agency located and seized the computer server that was hosting the website

. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 7 of 518 known to reside with his parents

. As part of the investigation, FBI Special Agent Ford prepared a 36

- page affidavit (the “ Affidavit ” ) , summarizing not only the FBI ’ s investigation, but also, inter alia, the nature of Hurt Meh, the TOR network , and the various reports received from the Foreign Agency . Of relevance to Sanders ’ s appellate contentions today are the A ffidavit ’ s ¶¶ 23 and 25, which specify information contained in the Foreign Agency ’ s shared reports and domestic law enforcement ’ s relationship with th e Foreign Agency . Those two paragraphs of Agent Ford’s Affidavit relate , in relevant part : 23. In August 2019, [the Foreign Agency]

. . . notified the FBI that the [Foreign Agency] determined that on May 23, 2019, a user of IP address [omitted] accessed online child sexual abuse and exploitation material via a website that the [Foreign Agency] named and described as [Hurt Meh].
25. The [Foreign Agency]

. . . advised U.S. law enforcement that it obtained that information through independent investigation that was lawfully authorized in the [Foreign Agency] ’s country pursuant to its national laws. The [Foreign Agency] further advised U.S. law enforcement that the [Foreign Agency] had not interfered with, accessed, searched, or seized any data from any computer in the United States in order to obtain that IP address information.
See J.A. 1447

- 48.
The A ffidavit also describe s pertinent characteristics of individuals who access child pornography on the Internet

. Such persons , according to the Affidavit , may electronically possess, collect, and maintain such materials. Th o se materials are stored electronically , thereby making evidence of such activity, including even deleted child pornography, recoverable on th o se individuals ’ computers for a long period

. On February 10, 2020

— approximately nine months after the target IP address had
accessed the Hurt Meh website

— the FBI submitted Agent Ford’s Affidavit to the district USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 8 of 519 court in Eastern Virginia, and requested a search warrant for the identified residence in McLean, Virginia , in addition to any structure or person on the property . The search
warrant was issued that same day by a federal m agistrate j udge in Alexandria (the

“ February Warrant ” )

. 3. Two days after the February Warrant was issued, in the early morning hours of February 12, 2020, the FBI executed it. When the FBI agents arrived at the residence , Sanders’s father admitted them . Sanders was located and then taken to an office therein to be interviewed. Once situated in the office, the FBI agents explained to Sanders that he
was not under arrest and that it was his choice as to whether to speak to the agents . Sanders agreed to be interviewed and understood that the interview was being r ecord ed

. Sanders
did not receive a ny Miranda warning s
. The FBI interview of Sanders lasted approximately three hours, and during the interview other FBI agents searched the residence . That search uncovered multiple
electronic devices in Sanders’s bedroom , including a flash drive containing child pornography. 6 When the interviewing FBI agents began asking about the flash drive, Sanders asked if he could speak with his mother. The agents promptly brought his mother
into the room

. A fter speaking with his mother for about 15 minute s , the FBI interview of
Sanders resumed. Sanders acknowledged that he recognized the flash drive. He explained

6 A flash drive is a small and portable electronic device, which is commonly used for storing electronic data transferred from a computer or digital device. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 9 of 5110 that he had transferred the child pornography to the flash drive himself and that he had accessed the material by using the TOR browser and a TOR directory. Approximately two hours later, the search and the interview concluded, and the FBI left without making any

arrests.
4.
The electronic devices that were seized by the FBI from Sanders’s residence on February 12, 2020, were subjected to extensive forensic examination. That examination uncovered several messages that Sanders had sent to six different boys

— aged 13 to 1 7

— through a mobile messaging application. In his conversations with five of th ose minor
children , Sanders instruct ed them to record and send videos and pictures that depicted
themselves nude. Sanders would frequently tell the minors to verbally degrade the mselves with insults while recording the videos. F our of the minors were instructed to “ slap ” their genitals “ as hard as [they] can , ” record themselves doing so , and send the video to Sanders. See, e.g. , J.A. 71. Sanders told two of the minors to record themselves masturbating. One boy sent a video to Sanders, depicting the minor engag ed in oral sex. Additionally, the
FBI found multiple videos of child sexual abuse on Sanders’s electronic devices. These videos include depictions of infants and minors being sexually abused, including being orally and anally raped by adult men. B.
O n June 24, 2020, an Indictment was returned in the Eastern District of Virginia naming Sanders as the sole defendant. T he Indictment alleged twelve offenses : USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 10 of 5111 • Five counts alleging production of child pornography in violation of 18 U.S.C. § 2251(a) (the “Production Charges”) ;

• Six counts alleging receipt of child pornography in violation of 18 U.S.C. § 2252(a)(2) (the “Receipt Charges”) ; and

• One count alleging possession of child pornography in violation of 18 U.S.C. § 2252(a)(4)(B) (the “Possession Charge”)

. See J.A. 86. The district court’s deadline for pre

- trial motions was initially set for August 20, 2020, but was extended to August 27.
1.
In July 2020, Sanders sought to compel the Government to produce discovery
related to the A ffidavit , pursuant to Rule 16(a)(1)( E ) of the Federal Rules of Criminal
Procedure

. 7 Sanders asserted that he was entitled to such discovery because Agent Ford
had misled the magistrate judge by (1) misrepresenting the content of the Foreign Agency ’ s reports , and (2) swearing that the Foreign Agency , in generating the August Report , did not interfere with a computer in the United States, when Agent Ford knew or should have
known that the contrary was true

. Sanders wanted to probe these alleged

7 The relevant portion of Rule 16(a)(1)(E) provides as follows: Upon 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, if the item is within the government’s possession, custody, or control and . . . the item is material to preparing the defense

. Fed. R. Crim. P. 16(a)(1)(E) (emphasis added). USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 11 of 5112 misrepresentations to bolster his planned pretrial attack on the validity of the February
Warrant

. On August 21, 2020, t he district court denied Sanders ’ s motion to compe l for failure to satisfy the materiality requirement of Rule 16(a)(1)(E). As explained in more detail below, the court ruled Sanders had not presented sufficient facts to indicate that the discovery would have actually helped prove his defense

. 8
2. On August 27 , 2020

— the day of the district court ’ s pretrial motion deadline

— Sanders filed a motion to suppress , seeking the suppression of the fruits of the search and

a Franks hearing. 9 The motion

— after first being struck for exceeding the 30

- page limit
under the pertinent local rule

— was later refiled as four separate motions to suppress

. T hose four suppression motions raised slightly varied arguments that (1) there was a lack
of probable cause to support the issuance of the February Warrant , and (2) Agent Ford had intentionally misled the magistrate judge in the supporting A ffidavit

. T he district court , in a n October 26, 2020, Sealed Memorandum Opinion , rejected
all of Sanders ’ s suppression efforts (the “Suppression Opinion”) . The court b egan its

8 When Sanders subsequently renewed his motion to compel

— which occurred multiple times throughout the proceedings

— t he district court denied those efforts as well. See J.A. 400 , 1650 , 183 3

- 35, 4035.

9 The term “ Franks hearing” is a reference to a hearing conducted by a trial court pursuant to the Supreme Court’s decision in Franks v. Delaware , 438 U.S. 154 (1978)

. The purpose of a Franks hearing is to probe the truthfulness of an affidavit used to support a search warrant. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 12 of 5113 ruling by determin ing that the February Warrant was facially valid . From there, the court
ruled that Sanders was not otherwise entitled to a Franks hearing because he had “ failed to make a substantial preliminary showing that [ Agent Ford ] made a false statement knowingly and intentionally, or with reckless disregard for the truth that is necessary to
find probable cause. ” See J.A. 1677. 10
3. On December 17, 2020

— 112 days after the district court’s extended pre

- trial
motion deadline and 52 days after his four separate motions to suppress had been denied

— Sanders filed a n untimely fifth motion to suppres s
. In t his fifth suppression motion , Sanders argued that his interview with the FBI agents on February 12, 2020, had been involuntary , and was in violation of the Fifth Amendment . The court ordered Sanders to
show cause for his substantial delay in asserting that issue

. In January 2021, the court ruled
that Sanders had failed to show good cause for his tardiness and denied the fifth motion to suppress as untimely. See J.A. 288. 11
C.
T he prosecution of Sanders proceeded to a jury trial in October 2021 , and it lasted seven days. During the trial, t he Government called nine witnesses

— including two of

10 The district court denied Sanders’s multiple subsequent attack s on the validity of the February Warrant

. See J.A. 514 , 2665 , 4037.

11 The district court also rejected Sanders’s subsequent requests for reconsideration and renewed motions to suppress his interview statements on Fifth Amendment grounds. See J.A. 361 , 410. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 13 of 5114 the minor victims

— and admitted more than 175 exhibits

. Sanders presented a relatively
brief defense , which included Sanders testifying on his own behalf

. On appeal, Sanders challenges several of the court ’ s evidentiary rulings and three of the jury instructions. The procedural history of those challenges is discussed below.
1.

a. During the pretrial proceedings, the Government moved in limine to exclude
evidence relat ing to the minor victims’ purported voluntary participation in their conduct
with Sanders. The district court granted the motion and excluded such voluntary participation evidence, ruling that the alleged minor victims’ state of mind was irrelevant
and inadmissible. See J.A. 2469.
This in limine ruling was reinforced at several points by the district court in the trial.
See , e.g. , J.A. 2830

- 32 (precluding Sanders from using screenshots of minor victim ’ s online dating profile on BDSM

- themed dating application to establish that minor victim

was “ into ” BDSM ) , 3286 (excluding portions of chat transcripts that were offered to establish allegedly consensual nature of relationship between Sanders and minor victim).
I n these later rulings, the court expanded its reasoning to exclude e vidence of the victims ’ purported voluntary participation under Rule 403 of the Federal Rule s of Evidence, ruling
that such evidence could confuse the jury on the issue of consent

. 12 Id. at 3286 , 3609

.

12 Rule 403 allows for the exclusion in limited circumstances of otherwise relevant evidence . It provides as follows: (Continued) USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 14 of 5115 b.
The district court also excluded the defendant’s proposed expert testimony of Dr. Fredrick Berlin, a professor in the Department of Psychiatry and Behavioral Sciences at the Johns Hopkins University School of Medicine. Sanders designated Dr. Berlin as an expert to testify about the so

- called BDSM culture, including how it “ can also involve more than just sex ” and that “ such relationships are based upon mutual consent

. ” See J.A. 2701.
Dr. Berlin was prepared to testify that Sanders ’ s ordering of the minor children to take photographs or videos of themselves was consistent with a consensual BDSM relationship. Additionally, Dr. Berlin would have testified on the meaning of certain terms frequently
used in the BDSM culture, including “ sub, dom, master, slave, owner, sir, boy, blackmail,
bitch , pup, and collaring. ” Id. at 2700.
T he district court excluded Dr. Berlin ’ s purported expert testimony from the trial as irrelevant. The court again ruled that evidence of consent was irrelevant to Sanders ’ s charges, and thus Dr. Berlin ’ s testimony as to the purported consensual and non

- sexual nature of BDSM relationships was excluded. The court also ruled that an expert was not needed to define certain BDSM terms, as their meanings “ are not so different from their common meaning as to require expert explanation

. ” See J.A. 2758.

The 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. See Fed. R. Evid. 403 (emphasis added). USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 15 of 5116 Even if Dr. Berlin’s testimony was somehow relevant, the court r uled , it was
nevertheless excludable under Rule 403 because the slight probative value of such testimony “would mislead the jury into thinking that the consent of alleged minor victims
in this case .

. . is somehow exculpatory

. ” See J.A. 2760 . The court also found that Dr.
Berlin ’ s testimony would be duplicative and unnecessary, because Sanders had already
testified on his behalf and had explained various terms used in BDSM culture

. 2

. The district court, throughout the trial, gave instructions to the jury regarding the Production Charges, the Receipt Charges, and the Possession Charge , alleged as violations
of 18 U.S.C. § 2251(a), § 2252(a)(2), and § 2252(a)(4)(B), respectively. Before assessing
those instructions, some background on the pertinent statutory language on the charged
offenses is in order. First, Section § 2251(a) of Title 18

— which sets forth the offense of production of child pornography

— provides: Any person who employs, uses, persuades, induces, entices, or coerces any minor to engage in

. . . any sexually explicit conduct for the purpose of producing any visual depiction of such conduct

. . . shall be punished as provided under [this section]

. See 18 U.S.C. § 2251(a). The offense of receipt of child pornography is defined in 18
U.S.C. § 2252(a)(2), which provides: Any person who

. . . knowingly receives, or distributes, any visual depiction using any means or facility of interstate or foreign commerce
. . . if

— (A) t he producing of such visual depiction involves the use of a minor engaging in sexually explicit conduct; and (B) such visual depiction is of such conduct ;

. . . shall be punished as provided in .

. . this section. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 16 of 5117 See 18 U.S.C. § 2252(a)(2). Similarly, 18 U.S.C. § 2252(a)(4)(B), which outlines the offense of possession of child pornography, provides: Any person who knowingly possesses

. . . 1 or more books, magazines, periodicals, films, video tapes, or other matter which contain any visual depiction that has been

. . . shipped or transported using any means or facility of interstate or foreign commerce

. . . if

— (i) the producing of such visual depiction involves the use of a minor engaging in sexually explicit conduct; and (ii) such visual depiction is of such conduct ; shall be punished as provided in .

. . this section.
See 18 U.S.C. § 2252 (a)(4)(B)

. W ith the foregoing statutory language in mind, we turn to
the district court’s instructions.

a. During Sanders ’ s trial, the district court repeatedly instructed the jury that the
consent of the minor victims was irrelevant to each of the charged offenses . The first instruction came during the testimony of the first witness

— one of the minor victims
Sanders had c ommunicat ed with

— and it was provided to the jury in response to a line of questioning pursued on cross

- examination by Sanders ’ s lawyers. Th e instruction was , in relevant part: A minor cannot consent to sexual activity or to engaging in child sexual abuse. So whether or not he wanted to do it or didn ’ t want to do it is irrelevant.
See J.A. 2861. The court repeated substantially similar instructions at other appropriate
times during the trial. Id. at 3317 (during defense ’ s cross - examination of Agent Ford) , 3789

- 91 (during defense ’ s closing argument). During the charge conference

— after the evidence was completely presented and prior to the arguments of counsel

— the district court informed the parties that it would USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 17 of 5118 instruct the jury “ that a minor cannot consent to the production of child pornography

. . . [and] any argument regarding a minor ’ s consent to the production of child pornography is irrelevant in reaching your verdict. ” See J.A. 577. Sanders objected to this instruction , requesting to add thereto that the jury could “ consider the assent or voluntariness of the minor in determining the defendant ’ s intent and purpose. ” Id. at 3731

- 32. In line with its prior rulings , t he court rejected that request and char ged the jury as it had proposed. Thus,
each of the related instructions (collectively, the “ Consent Instructions ” ) consistently
advised the jury that the consent or voluntary participation of minor victims in the alleged
offenses is irrelevant.
b. The p roduction of child pornography in violation of 18 U.S.C. § 2251(a) requires that a person have a minor engage in sexually explicit conduct for “the purpose of producing any visual depiction of such conduct.” Throughout the trial, Sanders argued that
this statutory language required that such production had to be the predominant purpose of
the defendant. See J.A. 474 (proposed jury instruction) , 529

- 32 (midtrial written objection) , 2771

- 72 ( oral argument on second day of trial ) , 3263

- 72 (oral argumen t on fourth day of trial )

. In each instance, t he trial court rejected Sanders’s contention in that regard

. Id. at 2772 ( “ I ’ ve ruled.

. . . [I] t ’ s not going to be dominant. ” ) , 3263 ( “ It has to be USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 18 of 5119 a motivating purpose. It doesn ’ t have to be predominant. ” ). 13 And o n the fourth day of trial, t he court gave two midtrial jury instructions that production of each visual depiction need be only “ a motivating purpose. ” See J.A. 3225 , 32 72

- 75

. When the district court explained and gave its proposed instructions at the charge
conference , it again used the “motivating purpose” language

— and this time Sanders did not object. W hen the court charged the jury, it gave , in relevant part, the following
instruction : In deciding whether the Government has proven that the defendant acted for the purpose of producing a visual depiction of sexually explicit conduct, you may consider all of the evidence concerning the defendant ’ s conduct. The production of a visual depiction of sexually explicit conduct must have been a significant or motivating purpose of the defendant, and not merely incidental to engaging in the sexually explicit conduct. It is not necessary, however, for the Government to prove that the defendant was single

- minded in his purpose or that the production of a visual depiction of sexually explicit conduct was the defendant ’ s sole or primary purpose. Rather, it is sufficient for the Government to prove that the defendant ha d a significant or motivating purpose of producing a visual depiction of sexually explicit conduct when he employed or used or persuaded or induced or enticed or coerced [a minor] to engage in sexually explic it conduct.

13 There is no doubt that the district court considered and rejected Sanders’s “predominant” purpose contention . When it denied Sander s ’s Rule 29 motion after the government’s submission of evidence was completed , the court stated : Now, I know that the defendants also argue that I’m not construing the statute properly, that it ought to be the . . . predominant or sole purpose. Well, I’ve rejected that. And if I’m wrong the Court of Appeals will tell me, and the Court of Appeals would have to instruct me to vacate the convictions on those five counts that that pertains to. See J.A. 3518

- 19. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 19 of 5120 See J.A. 573 (the “ Purpose Instruction ” )

.

c. Each of the twelve counts of the Indictment required the Government to prove that
the visual depictions were of children engaging in “sexually explicit conduct.” See 18 U.S.C. § § 2251(a) , 2252(a)(2) , 2252(a)(4)(B). And § 2256(2)(A)(v) of T itle 18 specifically defines “sexually explicit conduct” to include , in relevant part , “ lascivious exhibition of the anus, genitals, or pubic area of any person .” See 18 U.S.C. § 2256(2)( A )( v ). The district court, to provide the jury with guidance on what constitutes a

“ lascivious exhibition ,” informed the parties during the charge conference that it intended

to give the jury a non - exhaustive multi

- factor test , as spelled out by a 1986 federal trial

court in California in United States v. Dost , 636 F. Supp. 828 (S.D. Cal. 1986) (the “ Dost
Factors ”). Sanders objected to the Dost Factors and countered that lascivious exhibition of the genitals “ means depictions showing a minor engaged in

. . . hard core sexual conduct. ”
See J.A. 3740. Sanders’s contention was rejected, and the court gave the following
instruction on lascivious exhibition : For the visual depiction of an exhibition of the genitals or pubic area of a minor to be considered sexually explicit conduct, the exhibition must be lascivious. Whether a picture or image of the genitals or pubic area constitutes such lascivious exhibition requires a consideration of the overall context of the material. In determining whether an exhibition of the genitals or pubic area of a minor is lascivious, y ou may consider the following factors: Whether the focal point of the visual depiction is on the minor’s genitals or pubic area; two, whether the setting or visual depiction is sexually suggestive

— that is, a place or pose generally associated with sexual activity; whether the minor is depicted in an unnatural pose or in inappropriate attire USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 20 of 5121 considering the age of the minor; whether the minor is fully or partially clothed or nude; whether the visual depiction suggests coitus or a willingness to engage in sexual activity; and whether the visual depiction is intended or designed to elicit a sexu al response in the viewer.

. . . [A] picture or image need not involve all of these factors to be lascivious exhibition of the genitals or pubic area. It is for you to decide the weight or lack of weight to be given to any of these factors. Ultimately, you must determine whether the vis ual depiction is lascivious based on its overall content.
See J.A. 584

- 85 (the “ Lascivious Instruction ” ).
* * *
After the lawyers argued their positions to the jury, the district court gave its
instructions

. The jury deliberated for approximately two hours and returned its verdict of guilty on all twelve counts. On April 1, 2022, the district court sentenced Sanders to 216 months in prison on each of Counts 1 to 11, to run concurrently, plus 120 months on Count 12, to also run concurrently with the sentences on Counts 1 to 11. Sanders has appeal ed
his convictions and sentences , and we possess jurisdiction pursuant to 28 U.S.C. § 1291.

II. Sanders’s appellate contentions broadly manifest in four different forms

— with
additional issues nested therein. Th ose four broad contentions are : first, that the district court erred in denying motions to suppress evidence seized pursuant to a search warrant
for his residence , plus Sanders’s related efforts to inquire into alleged misrepresentations
in the Affidavit ; second, that the court erred in admitting statements Sanders made to FBI agents during the search of his residence ; third, that the court improperly excluded USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 21 of 5122 purported evidence of the victims ’ voluntary participation in the production of child pornography, including expert testimony about BDSM culture ; and , fourth , that the court
erred in giving the jury the Consent Instruction s , the Purpose Instruction, and the
Lascivious Instruction.
A. Sanders’s principal contention on appeal is that all of his convictions should be reversed on Fourth Amendment grounds. More specifically, he argues that the district

court ’s Suppression Opinion erroneously denied his various motions to suppress , in ruling
that the February Warrant was facially valid . A lternatively, Sanders contends he was
entitled to a Franks hearing and discovery under Rule 16(a)(1)(E) of the Federal Rules of
Criminal Procedure.
1. We begin by reviewing whether the magistrate judge had a substantial basis for finding probable cause to support the issuance of the February Warrant. As a general proposition, the l egal conclusions underlying the denial of a motion to suppress are reviewed de novo, and the court’s factual findings relating thereto are reviewed for clear

error. See United States v. Kolsuz , 890 F.3d 133, 141

- 42 (4th Cir. 2018)

. Because a magistrate judge issued the February Warrant, however, “our task isn’t to assess probable cause de novo,” rather, “we apply a deferential and pragmatic standard to determine whether the judge had a substantial basis for concluding that a search would un cover evidence of wrongdoing.” See United States v. Bosyk , 933 F.3d 319, 325 (4th Cir. 2019) (internal quotation marks omitted). And in assessing a suppress ion ruling , “ we view the USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 22 of 5123 evidence in the light most favorable to the prevailing party below .” See United States v.
Jones , 356 F.3d 529, 533 (4th Cir. 2004)

. T he Government is generally obliged to obtain a search warrant prior to searching

a residence

. See U.S. Const. amend. IV. And a search warrant must be supported by probable cause. See Fernandez v. California , 571 U.S. 292, 298 (2014). Probable cause is not a high bar, requiring only “ a fair probability that contraband or evidence of a crime will be found in a particular place. ” See Illinois v. Gates , 462 U.S. 213, 238 (1983). And

we readily acknowledge

— as a general proposition

— that a “ single click ” of an Internet link will not establish probable cause to search a residence for evidence of child pornography

. That is, unless there are solid additional facts t o suggest that “ the person behind that click plausibly knew about and sought out ” child pornography. See Bosyk , 933
F.3d at 326. Several pertinent facts spelled out in the Affidavi t establish beyond doubt that the magistrate judge had a substantial basis to issue the challenged February W arrant:

• The Foreign Agency

— known to be reliable

— had notified the FBI that the target IP address had accessed online child sexual abuse and exploitation material on Hurt Meh.

• The Hurt Meh website was a TOR hidden service, and therefore accessible only through the TOR networ k, making it “ extremely unlikely that any user could simply stumble upon [Hurt Meh] without first understanding its purpose and content

. ” See J.A. 1450.

• To access the child sexual abuse and exploitation material on Hurt Meh, an Internet user would have to register an account.

• Individuals with a sexual interest in children are known to possess, collect, and maintain child pornography in an electronic format on computers

. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 23 of 5124 • Due to the nature of electronic storage, even if an individual deletes child pornographic material, evidence of the material remains on the computer for an extended period.
A lthough th is search warrant relied on a single instance of accessing child pornography on the Hurt Meh website, the requisite affirmative steps to access that website and the pornographic material thereon strongly suggest that the Internet user knew that such
content was located on the site and had actively sought out such material

. Our 2019 decision in United States v. Bosyk is very instructive. See Bosyk , 933 F.3d
319

. In Bosyk , the DHS was investigating a particular TOR hidden service, which was a website dedicated to advertising and distributing child pornography. Id. at 322 . One day a link appeared on this hidden website (the “ Link ” ) , which was accompanied by a message graphically describing the contents of the L ink , making it unmistakable that the contents

were child pornography. Importantly, the L ink was to an open Internet site, i.e., not a TOR
hidden service. That same day, an IP address associated with the defendant’s residence
accessed the L ink. The prosecutors did not have an electronic record establishing whether Bosyk ’ s IP address had ever visited the TOR hidden service. Despite the absence of direct evidence that Boysk had previously visited the TOR
hidden service and viewed t he incriminating description of the L ink’s contents , we relied

on the circumstantial facts to establish that Boysk had probably accessed the TOR hidden
service

. See Bosyk , 933 F.3d at 330

. That is, w e ruled that there were sufficient additional
facts to show that the person who accessed the link knew it contained child pornography , in that (1) the L ink was accessed the same day it was posted on the TOR hidden service USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 24 of 5125 with the incriminating description ; and (2) because the methods of disseminating child pornography on the Internet made more innocent routes

— e.g. stumbling onto the L ink while browsing benign Internet content

— less likely. Here, the circumstantial gap is not nearly as wide as that which existed in Boysk

. Unlike in Boysk , this Affidavit revealed that Sanders’s IP address not only a cc essed a TOR
hidden service

— Hurt Meh

— but had “ accessed online child sexual abuse and exploitation material ” using that site. See J.A. 1447. To access the website ’ s illegal material, a user had to engage in several affirmative steps, including using the TOR browser, locating the obscure web address, and registering an account with Hurt Meh

. 14 Additionally, the chain of affirmative steps makes Sanders’s innocent explanations for accessing the abuse and exploitation material very doubtful. T hus, there are sufficient
additional facts to suggest that “the person behind that click plausibly knew about and sought out” child pornography. See Bosyk , 933 F.3d at 326.
We are also not impressed by Sanders’s appellate contention that the facts in the Affidavit were so “stale” as to negate probable cause. Sanders emphasizes, of course, the approximately nine

- month period that elapsed between the time Sanders’s IP address accessed the child pornography on Hurt Meh in May 2019 and the issuance of the February
Warrant . And indeed, “there is no question that time is a crucial element of probable

14 Sanders argues that the Government has no evidence that he ever registered an account with Hurt Meh. This assertion ignores the fact that the Foreign Agency advised the FBI that Sanders’s IP address had accessed child pornography on Hurt Meh

— which would not grant access until a user registered with it

. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 25 of 5126 cause,” and “evidence seized pursuant to a warrant supported by ‘stale’ probable cause is
not admissible.” See United States v. McCall , 740 F.2d 1331, 1335

- 36 (4th Cir. 1984). The question of whether probable cause is stale, however, “must be determined by the
circumstances of each case. ” See Sgro v. United States , 287 U.S. 206, 211 (1932) . And we have recognized that the “staleness inquiry is unique in [the] child pornography
context.” See Bosyk , 933 F.3d at 330. That is

— due to (1) the tendency of individuals
who intentionally access to collect child pornography, and (2) the material ’ s electronic

nature causing evidence of collection to be recoverable long after it is deleted

— search

warrants can reasonably be sustained “ months, and even years, after the events that gave rise to probable cause. ” Id

. at 331 (ruling that search warrant issued five months after “click” was valid)

. Here, the Affidavit conveyed the same critical information to the

m agistrate j udge

— the person who deliberately accessed the pornographic material on the
Hurt Meh website probably had a sexual interest in children and was therefore likely to be a collector of child pornography . And the evidence of such activity would be recoverable for long periods of time , even after the pornographic material had been deleted from the computer. Thus, the record evidence convincingly reveals that the magistrate judge was correct, and had a substantial basis for conclud ing that probable cause existed and supported issu ance of the February Warrant. And because of the nature of child pornography

— including the unique nature of such unlawful activity and the contraband
to be seized

— probable cause was not at all “ stale. ” USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 26 of 5127 2. Next, Sanders contends that , even if the Affidavit is sufficient to support probable

cause , he was nevertheless entitled to a Franks hearing and the Suppression Opinion erroneously denied him that opportunity. More s pecifically, Sanders argues that Agent
Ford “ baldly misrepresented the tip documents received by the FBI” in ¶ 23 of the Affidavit by swearing that a user of the subject IP address had “access [ed] online child sexual abuse and exploitation material via [ Hurt Meh ]

. ” See Appellant ’s Br. 18

. 15 We review legal determinations underlying the denial of Sanders ’ s Franks hearing de novo, while the

court ’ s related factual findings are reviewed for clear error. See United States v. Allen , 631 F.3d 164, 171 (4th Cir. 2011).
A defendant is entitled to attack an otherwise facially valid search warrant affidavit under the “narrow exception” created in Franks v. Delaware , 438 U.S. 154 (1978) . To
obtain a “ Franks hearing, ” the defendant “ must make a substantial preliminary showing that the affiant made (1) a false statement (2) knowingly and intentionally, or with reckless disregard for the truth that was (3) necessary to the finding of probable cause. ” See United
States v. White , 850 F.3d 667, 673 (4th Cir. 2017) (internal quota tion marks omitted)

. In assessing the Franks issue, t he Suppression Opinion concluded that a comparison
between the August Report from the Foreign Agency and ¶ 23 reveals no meaningful difference or falsity . As a result, Sander s ’ s request for a Franks hearing falter ed on the

15 Although Sanders also argued to the district court that Agent Ford’s alleged misrepresentation in ¶ 25 supported his request for a Franks hearing, Sanders has not pursued that proposition on appeal. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 27 of 5128 first prong

. Our own comparison reaches the same result. The August Report recited , in relevant part, that Sander s ’s IP address: [W]as used to access online child sexual abuse and exploitation material , with an explicit focus on the facilitation of sharing child abuse material (images, links and videos), emphasis on BDSM, hurtcore, gore, and death

related material including that of children. Users were required to create an account (username and password) in order to access the majority of the material.
See J.A. 1406 (emphasis added). P aragraph 23 of the Affidavit stated as follows: In August 2019, [the Foreign Agency]

. . . notified the FBI that the [Foreign Agency] determined that on May 23, 2019, a user of [Sanders ’ s] IP address accessed online child sexual abuse and exploitation material via a website that the [Foreign Agency] named and described as [Hurt Meh].
Id. at 1447 (emphasis added). On appeal, Sanders contends that “the only sensible way to understand the [August Report] is that it reported access to the website , not to specific images , ” and therefore the Report only suggests that Sanders visited Hurt Meh ’ s “ plain vanilla homepage. ” See Appellant’s Br. 18

- 20 . Not so

— the August Report makes it quite clear that child pornography was accessed. Nowhere does the August Report state that the Internet user merely visited Hur t Meh ’ s homepage. And the fact that Hurt Meh ’ s homepage does n ot display child pornography in no way alters the fact that the Affidavit accurately reiterated the August Report.
Sanders also argues that Agent Ford’s inclusion of the term “via a website” in ¶ 23 fundamentally alter s the meaning of the August Report. But the August Report explicitly
stated that child pornography was accessed online, and an Internet user cannot access such pornographic material without first accessing a website that distributes it

. Although the USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 28 of 5129 term “ via a website ” is found nowhere in the August Report, it is a readily understandable phrase used to naturally describe how the pornographic material was accessed. In these
circumstances , the Suppression Opinion properly rejected Sanders ’ s request for a Franks hearing.
3. Next, we turn to Sander s ’s contention that the district court improperly denied his motion to compel discovery pursuant to Rule 16(a)(1)(E). A denial of such discovery, however, is reviewed for abuse of discretion only

. See United States v. Caro , 597 F.3d 608, 616 (4th Cir. 2010). Rule 16(a)(1)(E) affords a defendant a right to obtain discovery of any item “within the government’s possession” if “the item is material to preparing the defense.” See Fed. R. Crim. P. 16(a)(1)(E). To establish materiality, the defendant bears the burden of
show ing “s ome indication that the pretrial disclosure of the disputed evidence would have enabled the defendant significantly to alter the quantum of proof in his favor. ” See Caro , 597 F.3d at 621 (internal quotation marks omitted)

. A conclusory allegation of materiality
does not satisfy the defendant ’ s burden. Id.
Sanders sought evidence from the Government to aid his Franks argument and his suppression motions. Specifically, Sanders wishe d to pursue discovery to support his theory that Agent Ford had (1) knowingly misrepresented the August Report in ¶ 23 of the
Affidavit , and (2) misled the magistrate judge by swearing

— in ¶ 25 of the Affidavit

— that the Foreign Agency had not interfered with any device in the United States when it generated its August Report. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 29 of 5130 We agree with Sanders that evidence altering the quantum of proof in a defendant’s favor concerning either a Franks motion or a suppression motion would satisfy the materiality standard of Rule 16(a)(1)(E). Nevertheless, we find no reversible error in the
district court ’ s ruling that Sanders did not present sufficient f acts “ indicating that the [requested] information would have actually helped prove his defense. ” See Caro , 597
F.3d at 621. More specifically, as to Sander s ’s contention regarding ¶ 23, there is no misrepresen tation included in ¶ 23

. Thus , we agree with the trial court that an inquiry into
the so - called “ misrepresentation ” is unnecessary. Regarding ¶ 25, the information conveyed therein is the same as that contained in the reports provided by the Foreign Agency . That is, both ¶ 25 of the Affidavit and the content s of the Foreign Agency ’ s reports show that the Foreign Agency had not interfered with any computer in the United
States in order to obtain the target IP address. See J.A. 1408 , 1447

- 48

. Sanders argue d to the district court that , even if ¶ 25 accurately restates the information provided by the Foreign Agency , Agent Ford should have known that it was technologically implausible for the Foreign Agency to obtain the IP address without interfering with a domestic computer. To support this proposition, Sanders relie d on declarations of his experts and affidavits by FBI agents in prior investigations

. The court
ruled against him, however, explaining that th o se arguments were unpersuasive , because (1) the expert declarations only speculated that the Foreign Agency had interfered with a domestic computer , and (2) a subsequent affidavit provided by Agent Ford, which
established that he knew about methods of de

- anonymizing TOR users that do not require
interference with the user’s computer. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 30 of 5131 Although Sanders insists that the district court improperly weighed the strength of his arguments, we are reviewing a Rule 16(a)(1)(E) ruling for abuse of discretion only

. And Sanders has identified no error s of law or erroneous factual determination s by the

court . We thus also reject Sanders’s Rule 16 contentions. 16
B.
Sanders maintains on appeal that his statements to the FBI agents during the February 12 search of his residence should be suppressed as unconstitutional under the
Fifth Amendment . The district court ruled , however, that Sanders’ s suppression effort was fatally untimely and that he had failed to establish “ good cause ” to excuse his tardy filing.
We review a court ’ s finding on a lack of good cause under Rule 12(c)(3) for abuse of
discretion. See United States v. Mathis , 932 F.3d 242, 256 (4th Cir. 2019)

. Pursuant to Rule 12 of the Federal Rule s of Criminal Procedure , a motion for the suppression of evidence must be presented prior to trial or by the deadline established by
the district court , “ if the basis for the motion is then reasonably available and the motion
can be determined without a trial on the merits. ” See Fed. R. Crim. P. 12(b)(3)( C ) , 12(c)

. If a defendant fails to satisfy such a deadline, he has waived his right to pursue a suppression motion

. Id. 12(c)(3) ; see also Mathis , 932 F.3d at 256; United States v. Sweat , 573 F. App ’ x 292, 295 (4th Cir. 2014)

. A court can only consider an untimely suppression

16 Sanders also argues that this C ountry and the Foreign Agency were in some joint venture where we would outsource the FBI’s investigative process to the Foreign Agency

. We see no abuse of discretion in the district court’ s conclusion that this assertion is “pure hopeful speculation

. ” See J.A. 1580. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 31 of 5132 motion if the moving party can show good cause for the untimeliness

. See Fed. R. Crim.
P. 12(c)

. Here, the district court ruled that Sanders had failed to show good cause for his 112

- day delay. In assessing whether good cause had been established , the court ruled (1) that the motion and corresponding evidentiary hearing would be certain to delay the trial, (2)
that Sanders had given no adequate or persuasive reason for his 112

- day delay in filing the
motion , (3) that the untimely motion would prejudice the Government as it prepared for trial, and (4) that Sanders had made no plausible argument about new information alerting
him to new or additional facts on which the motion could be based. See J.A. 291

- 93. 17 On appeal, Sanders does not claim that the district court abused its discretion in ruling that he did not establish good cause , n or does he contest the propriety of the legal

test applied by the court

. He simply emphasizes that he filed his motion “ nearly two
months before the then

- scheduled trial date ” and that he renewed his motion when the trial

was later delayed. See Appellant ’ s Reply Br. 24. But the court carefully addressed the timing of the trial, along with the rescheduled trial dates, in its various rulings. Absent an argument on why and how the court abused its discretion, w e are constrained to conclude

17 In ruling that Sanders had failed to establish good cause, the court utilized the framework provided by United States v. Samuel , 1:14

- cr - 351, 2015 WL 1442884 (E.D. Va. Mar. 26, 2015), at *3 (ruling that “ courts generally consider (i) the extent of the untimeliness, (ii) the reason for late filing, (iii) prejudice to the other party, and (iv) whether the receipt of additional information after the filing deadline alerted defendant to facts on which a motion to suppress might be based ” to determine whether a party has demonstrated good cause for untimely suppression motion. ). USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 32 of 5133 that the court did not reversibly err in denying the suppression effort as untimely and without good cause

. Sanders also maintains that his suppression effort concerning the interview was not waived because the district court was required by 18 U.S.C. § 3501(a) to “determine any issue as to voluntariness” before admitting his statements at trial. See 18 U.S.C. § 3501(a). Sanders, however, then concedes that the court complied with § 3501(a) when it “ultimately made a voluntariness finding.” See Appellant’s Reply Br. 24; see also J.A.
2726 n.13. And the court’s compliance with § 3501(a) would not displace its earlier waiver ruling

. See United States v. Moore , 769 F.3d 264, 268 (4th Cir. 2014). 18
C. Next, we address Sanders ’s challenges to the district court ’ s evidentiary rulings concerning e xclusion of (1) the voluntary participation of the various minor s in the sexually explicit conduct and (2) the proposed expert testimony of Dr. Berlin. Principally , Sanders argues that the court improperly interpreted the element s of the Production Charges, the

18 Even if we were to review the district court’s voluntariness ruling, we are satisfied that it was correct

— based on “ the totality of the circumstances ”

— and that Sanders’s Fifth Amendment rights were not violated. See United States v. Giddins , 858 F.3d 870, 880 (4th Cir. 2017). Sanders was interview ed in his own home, permitted to interrupt the interview to talk to his mother, was informed he was not under arrest, and never “expressed his desire to deal with the police only through counsel.” See Edwards v. Arizona , 451 U.S. 477, 484 (1981). A lthough the circumstances of the interview may have been intimidating, the record reveals that the intimidation was “no greater than that which is characteristic of police questioning generally,” and was insufficient to transform the interview into a custodial interrogation. See United States v. Azua

- Rinconada , 914 F.3d 319, 326 (4th Cir. 2019). USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 33 of 5134 Receipt Charges, and the Possession Charge . He thus argues that those improper interpretation s resulted in the court erroneously deciding that the evidence w as irrelevant. Generally, w e review a trial court ’ s ruling s on the admission of evidence for abuse
of discretion. See Macsherry v. Sparrows Point, LLC , 973 F.3d 212, 221 (4th Cir. 2020).
And insofar as a trial court exclude s evidence under Rule 403, w e afford the court broad
discretion

— overturning an evidentiary ruling only “ under the most extraordinary circumstances, where that discretion has been plainly abused. ” See United States v.
Udeozor , 515 F.3d 260, 265 (4th Cir. 2008)

. 1.
To understand Sanders ’ s evidentiary contentions, we will recite the applicable legal principles

. Sanders argues that the Government was required

— on each of the criminal offenses being tried

— to prove that the will of the depicted minor was overcome during the production of the pornographic material . He further contends t ha t a minor child’s voluntary participation in the production of pornographic material would tend to establish
that his will was not overcome. We begin by reviewing the five Production Charges under § 2251(a), which imposes criminal penalties on
A ny person who employs, uses, persuades, induces, entices, or coerces any minor to engage in

. . . any sexually explicit conduct for the purpose of producing any visual depiction of such conduct

. See 1 8 U.S.C

. § 2251 (a). Sanders maintains that the word “ use s ” in § 2251(a) must be interpreted narrowly , and requires that the defendant “ overcome the will of the minor USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 34 of 5135 participants. ” See Appellant ’ s Br. 32. Put differently, Sanders argues that proof of “ use s ” requires “ some action to achieve assent ” of the minor boy

. Id. at 34.
This proposition is , as the trial court ruled, without merit

. T he term “ use s ” i s not defined in § 2251(a) , and we must apply its ordinary meaning. See United States v. George , 946 F.3d 643, 646 (4th Cir. 2020)

. And the ordinary meaning of “ use s ” includes “to put into action or service,” “avail oneself of , ” or “employ.” See Merriam

- Webster Online Dictionary , http://www.merriam

- webster.com/dictionary/use [ https://perma.cc/5P95

- 7MH9 ] (last visited June 10 , 20 24 ) . Th is meaning is confirmed by Black ’ s Law Dictionary , which defines “use” as “[t] o employ for the accomplishment of a purpose ” or “ to avail
oneself of .” Use , B LACK ’ S L AW D ICTIONARY ( 11 th ed. 2019 )

. Importantly, the definition of “ use s ” in § 2251(a) is not a question of first impression
for this Court. W e have heretofore ruled that the ordinary meaning of “ use s ” does not require a defendant to overc o me the will of the minor or obtain the minor ’ s assent. See United States v. Engle , 676 F.3d 405, 41 8 n.9 (4th Cir. 2012) ( “ A defendant ‘ uses ’ a minor for purposes of § 2251(a) if he photographs the minor engaging in sexually explicit conduct to create a visual depiction of such conduct. ” )

. 19

19 We are not alone in the view that the term “use s ” does not require a defendant to overcome the will of the minor child . The First, Second, Sixth, Eighth, Tenth, and D.C. Circuits uniformly agree

— “use s ” can be satisfied by photographing the child to create child pornography, regardless of whether the child assented to the photography , or if their participation was voluntary. See Ortiz

- Graulau v. United States , 756 F.3d 12, 17

- 18 (1st Cir. 2014) ; United States v. Sirois , 87 F.3d 34, 41 (2d Cir. 1996); United States v. Wright , 774 F.3d 1085, 1091 (6th Cir. 2014); United States v. McCloud , 590 F.3d 560, 566 (8th Cir. 2009) ; United States v. Theis , 853 F.3d 1178, 1181 (10th Cir. 2017); United States v. Hillie , 39 F.4th 674, 691 (D.C. Cir. 2022). USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 35 of 5136 We will thus decline Sanders ’ s invitation to reinterpret the term “ use s ” to require a defendant to “ overcome the will of the minor .” Not only are we bound by precedent, but
the phrase “ overcome the will of the minor ” is found nowhere in § 2251

. A nd Sanders has point ed us to no authority supporting his proposed interpretation. Despite Sanders’s contention to the contrary, t he plain meaning of the word “ use s ”
is bolstered

— rather than diminished

— by “ the company it keeps , ” and the doctrine of
noscitur a sociis (Latin for “it is known by its associates”)

. See Gustafson v. Alloyd Co.,
Inc. , 513 U.S. 561, 575 (1995)

. As pointed out by the Ninth Circuit, one of the other means of violating § 2251 (a)

— to “ employ ” the minor child

— is listed as an ordinary synonym for “ use. ” See United States v. Laursen , 847 F.3d 1026, 1032 (9th Cir. 2017)

. Additionally, we readily reject Sanders’s contention that our interpretation of “use s ” would render the other verbs superfluous

. A s highlighted by the First Circuit

— our shared interpretation of the term “use s ” reaches a defendant’s active involvement in the production of the pornographic material even when “ the interpersonal dynamics between the defendant and the depicted minor are unknown ” but “ the terms employ, persuade, induce, entice, and coerce reach various types of external pressure that a defenda nt might apply on a minor to get him or her to engage in sexually explicit conduct. ” See Ortiz

- Graulau v. United States , 756 F.3d 12, 19 (1st Cir. 2014)

. The inclusion of a list of similar verbs in § 2251(a) indicates that Congress intended to criminalize as broad of a range of conduct as possible

— rather than to narrow the proscribed conduct

. See United States v. Helton , 944 F.3d 198, 208 (4th Cir. 2019) (ruling that Congress ’ s use of “ broad terms without limiting them or defining them ” reflects its USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 36 of 5137 decision to utilize sweeping ordinary meaning); see also Ortiz

- Graulau , 756 F.3d at 19

. And “ [g] iven Congress ’ s broad interest in preventing sexual exploitation of children , ”

— i.e., persons who are vulnerable and unable to legally consent

— our existing application
of the term “ use s ” is eminently rational

. See United States v. Malloy , 568 F.3d 166, 179 (4th Cir. 2009)

. Turning to the six Receipt Charges and single Possession Charge

— governed by § 2252(a)(2)(A) and § 2252 (a)(4)(B)(i)

— Sanders argues that his proposed narrow interpretation of “use s ” in § 2251(a) is similarly applicable to those statutory provisions as well

. Those provisions apply only when the production of the visual depiction “involves
the use o f a minor engaging in sexually explicit conduct.” See 18 U.S.C. § § 2252(a)(2)(A),
2252 (a)(4)(B)(i) (emphasis added) . Again, Sanders points to no statutory language or court decision supporting his interpretation

. We therefore decline to rule that the verb “ use ” requir es the Government to prove

— in every prosecution for receipt or possession of child pornography under § § 2252 (a)(2) or 2252 (a)(4)(B)

— that the production of the visual depiction involved “overcoming the will of the minor

. ”
2.
Now having briefly reviewed the applicable l egal principles , we turn to the district court’s ruling that evidence of the minors’ voluntary participation in the production of pornographic material was inadmissible under Rule 402 of the Federal Rules of Evidence.
Irrelevant evidence

— as defined by Rule 401 of the Federal Rules of Evidence

— is
inadmissible under Rule 402

. See Fed. R. Evid. 40 2

. Rule 401 provides that evidence is “relevant” if “it has any tendency to make a fact more or less probable” and “the fact is of USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 37 of 5138 consequence in determining the action.” See Fed. R. Evid. 401. Consequently, what
constitutes relevant evidence depends on the facts of the case, the nature of the charges , and the associated defenses. Put succinctly, the district court was correct

— n o matter how it is phrased

— that

a minor ’ s consent, assent, or voluntary participation, does not go to an y element or defense
of Sanders ’ s various offenses. The court proper ly read and applied § § 2251(a), 2252(a)(2),
and 2252(a)(4)(B) to mean that evidence of the minors ’ voluntary participation in the production of the pornographic material was irrelevant. And in affirming the court, we join the other court s of appeals that have ruled similarly. See Unit ed State s v. Wells , 843 F.3d 1251, 1255 (10th Cir. 2016) ; United States v. Raplinger , 555 F.3d 687, 692 (8th Cir. 2009) ; see also United States v. Sibley , 681 F. App ’ x 457, 461 (6th Cir. 2017)

. 20
3. Next, we address the district court’s exclusion of the expert testimony of Dr. Berlin. The court considered two subsets of Dr. Berlin’s testimony

— (1) testimony concerning
the consensual and non

- sexual components of BDSM relationships , and (2) testimony concerning various terms utilized within his views of BDSM culture.

20 The district court also excluded evidence of the minors ’ voluntary participation under Rule 403. And we have identified no situation where the court “ plainly abused ” its discretion to exclude evidence under Rule 403. See Udeozor , 515 F.3d at 265

. Accordingly, we agree that the exclusion rulings were also proper under Rule 403. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 38 of 5139 a. Insofar as Dr. Berlin would have testified about the consensual and non - sexual
elements of a BDSM relationship

— the court excluded such testimony as irrelevant. And,
as discussed above the court was correct in that exclusion ruling , and thus did not err in excluding that portion of Dr. Berlin’s testimony as irrelevant

. Sanders maintains that the existence of a “ non - sexual component ” of BDSM relationships would tend to undermine his knowledge that the material depicted “sexually explicit conduct.” See Appellant’s Br. 43. This “non

- sexual component” argument, however, is necessarily intertwined with testimony regarding the minors’ voluntary participation in the BDSM relationships. And the court emphasized that such expert testimony would “mislead the jury into believing that the minor victims’ alleged consent to production of t hese images is exculpatory,” and is therefore excludable under Rule 403.
See J.A. 2758.
We afford trial courts “ broad discretion ” to determine whether the probative value
of proposed evidence would outweigh the danger of misleading the jury. See Steves and Sons, Inc. v. JELD

- WEN, Inc. , 988 F.3d 690, 713 (4th Cir. 2021). And w e will overturn such a ruling only “ under the most extraordinary circumstances, where that discretion has been plainly abused. ” See Udeozor , 515 F.3d at 265

. Here, no such abuse of discretion
occurred.
b. Second, the district court excluded the balance of Dr. Berlin’s testimony as to the

use of various terms by BDSM culture

— e.g., sub, dom, master, and slave

. The court USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 39 of 5140 ruled that such testimony was inadmissible , in that the terms ’ meanings were not beyond the knowledge of the average juror

. To be admissible, Rule 702 of the Federal Rule s of Evidence requires that the expert’s testimony “will help the trier of fact.” See Fed. R. Evid. 702(a). To determine whether expert testimony will assist the tri er of fact, we have
instructed the trial courts to consider “whether the testimony presented is simply reiterating facts already within the common knowledge of the jurors.” See United States v. Dorsey , 45 F.3d 809, 814 (4th Cir. 1995). And we accord trial judge s “a great deal of discretion ” in making such determination s
. Id. Indeed, expert testimony on relevant jargon and related terms may be helpful to a jury in some situations

. See, e.g. , United States v. Simmons , 923 F.2d 934, 946 (2d Cir. 1991) ( admitting expert testimony explaining terms “used by narcotics dealers to camouflage their activities”) ; United States v. Offill , 666 F.3d 168, 175 (4th Cir. 2011) (ruling that expert testimony helps explain “ unfamiliar terms and concepts ” ). But again , expert opinions are not generally necessary to interpret terms or phrases that jurors can
understand on their own

. Aside from conclusory statements that certain terms have unfamiliar meaning s as used in the BDSM context, Sanders offers little reason why the district court abused its discretion in ruling that the various terms “ are not so different from their common meaning as to require expert explanation. ” See J.A. 2758. Sanders offers only one example of how the common meaning of these terms would vary from their meaning within BDSM culture

— that is, Dr. Berlin would testify that the subject terms do not “ convey some measure of
coercion. ” See Appellant ’ s Br. 46. Such an argument is

— once again

— an attempt to USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 40 of 5141 introduce evidence of the voluntary participation of the minor boys . A s discussed above,
the court was correct in excluding such evidence

. We observe that , prior to the district court exclud ing the proposed testimony of Dr. Berlin, the court and the jury had already heard from Sanders about what he understood
the subject terms to mean in the BDSM context . Thus, the court was well situated to assess whether the various terms sufficiently varied from their common meaning s to warrant an expert ’s explanation. Again , we are satisfied that the court did not abuse its discretion in
this context

. D. Finally , we turn to Sanders’s contentions of error regarding the trial court ’ s jury
instructions

— specifically , the Consent Instructions, the Purpose Instruction, and the
Lascivious Instruction. On direct appeal, “[w]e review a district court’s decision to give a particular jury instruction for abuse of discretion, and review whether a jury instruction incorrectly stated the law de novo.” See United States v. Miltier , 882 F.3d 81, 89 (4th Cir. 2018). In so doing , “we do not view a single instruction in isolation; rather we consider whether taken as a whole and in the context of the entire charge, the instructions accurately

a nd fairly state the controlling law.” See United States v. Lighty , 616 F.3d 321, 366 (4th Cir. 2010). We also review for abuse of discretion a trial court ’ s decision not to give an instruction, reversing only if the proposed instruction “ (1) was correct, (2) was not substantially covered by the charge that the court actually gave to the jury, and (3) involved some point so important that the failure to give the instruction seriously impaired the
defendant ’ s defense. ” See United States v. Raza , 876 F.3d 6 04, 614 (4th Cir. 2017)

. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 41 of 5142 1.
Sanders first argues that the trial court’s Consent Instruction s

— which informed the jury t hat a minor ’ s consent or voluntary participation in the production of the pornographic material was irrelevant

— were legally erroneous. To support this argument, Sanders relies on his interpretation of the term s “use s ” and “use” as found in 18 U.S.C. § 2251(a), § 2252(a)(2), and § 2252(a)(4)(B) . That is, he argues that those terms require that the production of the material involved overcoming the will of the minor. Again, w e reject Sanders ’ s proposed interpretation s and thus are satisfied that the court did not err in giving the Consent Instructions.
2. Turning to the Purpose Instruction, Sanders contends on appeal that the district court fundamentally misconstrued the statute , and that the statute actually mandates the jury to find that producing child pornography is a defendant ’ s “predominant” purpose. T he court,
in the Purpose Instruction , explained that the prosecution was required to prove that “ [t]he production of a visual depiction of sexually explicit conduct ” was “ a significant or motivating purpose of the defendant, and not merely incidental to engaging in the sexually explicit conduct. ” See J.A. 573. T he “ motivating purpose ” language was also used in two
midtrial instructions.
Section 2251(a) of Title 18 requires proof that the defendant use d a minor to engage
in sexually explicit conduct “ for the purpose of producing any visual depiction of such
conduct .” Our Court , in our 2020 McCauley decision , acknowledged that § 2251(a) ’ s use of “ the purpose , ” rather than “ a purpose , ” means that the purpose of production must USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 42 of 5143 “ carr [y] some predominant weight

. ” See United States v. McCauley , 983 F.3d 690, 695 (4th Cir. 2020) (emphasis added)

. That is, use of the phrase “‘ the purpose ’ requires that the filming be at the very least a significant purpose in the sexual conduct itself, not merely
incidental. ” See McCauley , 983 F.3d at 695

. It is this distinction

— between a “ significant ” purpose and a “ merely incidental ” purpose

— that is critical. Id. at 69 6

- 97

. We have also explained that “ [w] hether an instruction reads ‘ the purpose, ’ ‘ the dominant purpose, ’ ‘ a motivating purpose ’

— or some other equivalent variation

— may not be crucial, but the statute plainly requires something more than ‘ a purpose. ’” Id. at 697 (emphasis added)

. It is readily evident that the Purpose Instruction was not erroneous. It acknowledges
the distinction drawn in McCauley

— adequately contrasting “ a significant or motivating purpose” from a “merely incidental” purpose. Indeed, by the Purpose Instruction and its
related midtrial instructions, the court utilized a recognized “equivalent variation” of the phrase “ the dominant purpose”

— that is, a “ motivating purpose. ” And , i n 2020, this Court affirmed the use of an instruction with the “significant or motivating purpose” language.
See United States v. Thompson , 807 F. App’x 251, 252 (4th C ir. 2020). Thus, we reject
Sanders’s claim of error in this regard

. 21

21 Rule 30(d) of the Federal Rules of Criminal Procedure provides that , in order to preserve an appellate challenge to a jury instruction, a party “ must inform the court of the specific objection and the grounds for the objection before the jury retires to deliberate .” See Fed. R. Crim. P. 30(d). The Government maintains that we are obliged to review the Purpose Instruction contention pursued by Sanders for plain error only, because he failed to object to it at the charge conference. Because there was no error in the Purpose Instruction

— plain or otherwise

— we need not decide the issue of whether plain error applies. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 43 of 5144 3.
Sanders also contends that the district court’s Lascivious Instruction was erroneous
because the court had relied on and adopted the Dost F actors. More specifically, Sanders argues that it “ invited the jury to convict based on nothing more than simple nudity” or to convict on “a finding that the material was designed to elicit a sexual response in the
viewer

. ” See Appellant ’ s Br. 41. And Sanders complains that the court declined to instruct
that a lascivious exhibition of the genitals means a depiction “ showing a minor engag ed in

. . . hard core sexual conduct

. ” See J.A. 3740, see also Appellant’s Br. 41

- 42 . After identifying the applicable principles , we examine each contention in turn.

a. The district court defined the term “ lascivious exhibition” because each of the
twelve charges required the Government to prove that the visual depictions in question
connoted a minor engaged in “sexually explicit conduct.” 18 U.S.C. § 2251(a) , § 2252(a)(2), and § 2252(a)(4)(B). And “sexually explicit conduct,” includes, in relevant part , a “ lascivious exhibition of the anus, genitals, or pubic area of any person .” See 18
U.S.C. § 2256(2)( A )(v). Congress, however, did not expressly define the phrase
“la scivious exhibition. ” To aid in determining the meaning of “ lascivious exhibition ” a California district

court

— in United States v. Dost , 636 F. Supp. 828 (S.D. Cal. 1986)

— developed six
factors nearly 40 years ago for the trier of fact to consider in a case such as this : (1) whether the focal point of the visual depiction is on the child’s genitalia or pubic area; USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 44 of 5145 (2) whether the setting of the visual depiction is sexually suggestive, i.e., in a place or pose generally associated with sexual activity; (3) whether the child is depicted in an unnatural pose, or in inappropriate attire, considering the age of the child; (4) whether the child is fully or partially clothed, or nude; (5) whether the visual depiction suggests sexual coyness or a willingness to engage in sexual activity; (6) whether the visual depiction is intended or designed to elicit a sexual response in the viewer.
See Dost , 636 F. Supp. at 832. The Dost court further explained that

a visual depiction need not involve all of these factors to be a “ lascivious exhibition of the genitals or pubic area. ” The determination will have to be made based on the overall content of the visual depiction, taking into account the age of the minor.
Id

. In its Lascivious Instruction, t he district court adopted

— nearly verbatim

— the Dost
Factors when it instructed the jury as to a lascivious exhibition. See J.A. 584

- 85.
A lthough t he Dost F actors have been subjected to criticism over the years, nine of
our sister court s of appeals have adopted or endorsed t hem to aid in determining whether a certain visual depiction connotes a lascivious exhibition

. 22 See United States v. Frabizio , 459 F.3d 80, 87 (1st Cir. 2006) ; United States v. Rivera , 546 F.3d 245, 250 (2d Cir. 2008) ;

22 As highlighted by the Second Circuit, one underlying concern of many Dost

factor critics seems to be that the factors are “over

- generous to the defendant.” See United States v. Rivera , 546 F.3d 245, 251 (2d Cir. 2008) (internal quotation marks omitted); see also Frabizio , 459 F.3d at 88 ; United States v. Wi e gand , 812 F.2d 1239, 1244 (9th Cir.)

. This appeal does not afford us an opportunity to assess whether the Dost Factors are overly generous to defendant s , as this appeal is by the defendant and the Government does not pursue such an issue. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 45 of 5146 United States v. Villard , 885 F.2d 117, 122 (3d Cir. 1989) ; United States v. Steen , 634 F.3d 822, 82 6 (5th Cir. 2011); United States v. Brown , 579 F.3d 672, 680 (6th Cir. 2009) ; United
States v. Petroske , 928 F.3d 767, 773 (8th Cir. 2019); United States v. Perkins , 850 F.3d 1109, 1121 (9th Cir. 2017); United States v. Isabella , 918 F.3d 816, 831 (10th Cir. 2019);
United States v. Hunter , 720 F. App ’ x 991, 996 (11th Cir. 2017). But our Court has neither adopted n or rejected the Dost F actor s
. See Courtade , 929 F.3d at 192 (4th Cir.)

. T wo of the thirteen courts of appeal s seem to have rejected the Dost F actors. The
Seventh Circuit

— ruling that it was not plain error to instruct on the Dost F actors

— discouraged their “ routine use ” because a juror ’ s “ common understanding ” is enough to identify lascivious exhibition

. See United States v. Price , 775 F.3d 828, 840 (7th Cir. 2014). The D.C. Circuit , on the other hand, declined to adopt the Dost F actors because it interpreted a lascivious exhibition to mean a visual depiction “ showing a minor engaged in

‘ hard core ’ sexual conduct ”

— something that the Dost F actors do not require. See United
States v. Hillie , 39 F.4th 674, 688 (D.C. Cir. 2022).
b.
Sanders complains that the Lascivious Instruction was “ freewheeling , ” and that the
Dost F actors invite d the jury to convict him based on either “ nothing more than simple nudity , ” or a finding that the visual depictions subjectively elicited a sexual response in the
viewer. See Appellant ’ s Br. 41. That is, he targets the fourth and sixth Dost Factors , and asserts they are prejudicial

. Indeed, i nstructing the jury that it may convict based on simple nudity may be

erroneous. See Courtade , 929 F.3d at 191 ( ruling of this court that 18 U.S.C. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 46 of 5147 § 2256(2)(A)(v) “ requires more than mere nudity ” ). Additionally, allowing a jury to convict solely because the defendant subjectively found the visual depictions arousing

“ would be engaging in conclusory bootstrapping , ” because “ [c]hild pornography is not created when the pedophile derives sexual enjoyment from an otherwise innocent photo. ”
See Villard , 885 F.2d at 125; see also United States v. Amiraul t , 173 F.3d 28, 34 (1st Cir. 1999) ; Rivera , 546 F.3d at 252; United States v. Wiegand , 812 F.2d 1239, 12 45 (9th Cir. 1987)

. The Lascivious Instruction, however, did not permit the jury to make either of t hose
conclusions

. For starters, the Lascivious Instruction did not advise the jurors that they could convict on nudity alone. See J.A. 584 (“ For the visual depiction of an exhibition of the genitals

. . . to be considered sexually explicit conduct, the exhibition must be lascivious ”)

. Rather, the Lascivious Instruction stated that the jury could consider the exten t of nudity
in deciding whether the visual depiction is lascivious

. C ertainly, the exten t that nudity is
used in a depiction is helpful guidance in determining whether the visual depiction is
lascivious. Second

— as to the sixth factor

— nowhere does the instruction provide that the subjective arousal of the viewer is the relevant inquiry. In fact, that factor explicitly provides that the jury is to look at “whether the visual depiction is intended or designed to elicit a sexual response,” not whether a sexual response was elicited. Id. at 585 (emphasis USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 47 of 5148 added)

. In our view, b oth Dost F actors

— the fourth and sixth

— could aid a jury in determining whether the visual depiction is lascivious. 23 Additionally, any concern that the Lascivious Instruction confused the jury about
whether a visual depiction was lascivious based solely on either nudity or the subjective
reaction of a defendant is diminished in this situation by the district court ’ s comprehensive explanation . The Lascivious Instruction emphasiz ed that the Dost F actors were o nly a guide

— non - exhaustive and discretionary. Indeed, the court expressly told the jury that it

“ may consider the following factors , ” i.e., the Dost Factors. See J.A. 585 (emphasis added).
T he Lascivious Instruction also confirmed that the Dost F actors are not definitional by providing that a visual depiction “ need not involve all of these factors ” and that the jury
is permitted to decide the appropriate weight for each factor. See J.A. 585. I mportantly,

t he Instruction discouraged the jury from relying on a single factor

— stating that w hether a depiction portrays a lascivious exhibition requires consideration of the “ overall context ”
and “ overall content ” of the visual depiction

. Id. at 584

- 85. Put succinctly, the court properly instructed the jury that the Dost F actors “are not mandatory, formulaic or
exclusive.” See Rivera , 546 F.3d at 253. What the Lascivious Instruction accomplish ed , however, was that it gave the jury various neutral reference points to understand the term “lascivious exhibition ”

— a phrase

23 The specific language of the sixth Dost F actor is similar to our definition of lascivious exhibition. That is, we define “lascivious exhibition” in the context of child pornography offenses to mean “a depiction which displays or brings forth to view in order to attract notice to the genitals or p ubic area of children, in order to excite lustfulness or sexual stimulation in the viewer.” See Courtade , 929 F.3d at 192. USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 48 of 5149 that jurors are not likely to have familiarity with. And as aptly put by the Second Circuit,
neutral considerations “avoid decisions based on individual values or the revulsion potentially raised in a child pornography prosecution , ” and they “mitigate the risk that jurors will react to raw images in a visceral way.” See Rivera , 546 F.3d at 25 2

- 53

. In sum, the Dost F actors may not be necessary or helpful in every child pornography prosecution, but we are satisfied that the trial court did not err in using t hose F actors in
these circumstances

. T his appeal highlight s , however, that trial courts should ensure that

a jury (1) is not instructed to rely exclusively on the Dost F actors, (2) understands that no single Dost F actor is dispositive, and (3) is discouraged from a strict and mathematical application of the Dost F actors.

c. Sanders’s final contention about the Lascivious Instruction is that the court declined

to inform the jury that the term “ lascivious exhibition ” means a depiction “ showing the minor engaged in

. . . hard core sexual conduct

. ” See J.A. 3740. In so doing, Sanders champions the D.C Circuit’s Hillie case , which ruled that a “ lascivious exhibition of the anus, genitals, or pubic area of any person , ” as used in 18 U.S.C. § 2256(2)(A)(v) means a depiction of “ hard core sexual conduct

. ” See Hillie , 39 F.4th at 68 2

. This C ourt’ s interpretation of th e term lascivious exhibition , however, has never required the depiction

to connote the minor engaging in sexual conduct

. In fact, we disclaimed such a requirement
in our 2019 decision in United States v. Courtade , 929 F.3d 186 (4th Cir. 2019).
In Courtade , then

- Chief Judge Gregory and our panel dealt with a minor child who was instructed by the defendant stepfather to shower with a camera “to see if the camera USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 49 of 5150 was waterproof.” See Courtade , 929 F.3d at 188. The minor was deceived and was told that the camera was off and was not recording. The camera

— recording from both the
bathroom counter and the floor of the shower

— captured the minor child undressing and showering. Courtade instruct ed the child on how to position the camera , which ensure d
that it record ed her nude body

. He also took an active role in filming the minor

“ deliberately angling the camera lens down in such a way as to capture even more foot age of [the minor ’ s] breasts and genitals. ” Id. at 193. Although t he minor’s “breasts and genitals are visible at various points , ” she never engages in any sexual conduct or displays any inclination to do so. Id. at 188. Nevertheless, we ruled that the video’s objective characteristics constituted a “lascivious exhibition” of the genitals. See Courtade , 929 F.3d at 192

- 93

. W e explained
that “ lascivious exhibition ” means “ a depiction which displays or brings forth to view in order to attract notice to the genitals or pubic area of children, in order to excite lustfulness
or sexual stimulation in the viewer. ” Id. at 192. Applying that definition to the video at issue, we ruled that the extensive nudity , which was “ entirel y the product of an adult man ’ s deceit, manipulation, and direction, ” made it clear that “ t he video ’ s purpose was to excite
lust or arouse sexual desire

. ” Id

. Thus, our conclusion in Courtade

— that a lascivious exhibition exists without any depiction of the minor engaging in sexual conduct or conduct connoting a sex act

— cannot be reconciled with Hillie ’ s requirement to the contrary

. W e are bound by our Courtade precedent

. See McMellon v. United States , 387 F.3d 329, 332 (4th Cir. 2004) (ruling it is a “ basic principle that one panel cannot overrule a decision issued by another panel ” ). Likewise, the trial court did not abuse its discretion by USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 50 of 5151 correctly appl ying the law of this Circui t, and it properly rejected the defendant ’ s legally

erroneous request to instruct the jury that “ lascivious exhibition ” means “ depictions showing a minor engaged in

. . . hard core sexual conduct. ” See J.A. 3740.

III. Pursuant to the foregoing, we reject Sander s ’s various contentions of error and
affirm his convictions and sentences.
AFFIRMED USCA4 Appeal: 22-4242 Doc: 76 Filed: 07/09/2024 Pg: 51 of 51