United States Court of Appeals
                            FOR THE EIGHTH CIRCUIT
                                  ___________

                                    No. 08-2579
                                    __________

United States of America,               *
                                        *
             Appellee,                  *
                                        * Appeal from the United States
      v.                                * District Court for the
                                        * Eastern District of Missouri.
                                        *
Devin C. Wilson,                        *
                                        *
             Appellant.                 *
                                   ___________

                             Submitted: January 15, 2009
                                Filed: May 14, 2009
                                 ___________

Before LOKEN, Chief Judge, WOLLMAN and SHEPHERD, Circuit Judges.
                             ___________

SHEPHERD, Circuit Judge.

       Devin C. Wilson was convicted on one count of transporting a minor across
state lines for prostitution in violation of 18 U.S.C. § 2423(a), two counts of
producing child pornography in violation of 18 U.S.C. § 2251(a), and one count of
being a felon in possession of a firearm in violation of 18 U.S.C. § 922(g). The
district court1 sentenced him to a total term of 440 months imprisonment. He appeals
on various grounds. First, he challenges the denial of his motion to suppress arguing


      1
       The Honorable Henry Edward Autrey, United States District Judge for the
Eastern District of Missouri.
that evidence was improperly seized. Second, he contends that the district court
abused its discretion by not instructing the jury that (1) the government was required
to prove scienter as to the victim’s age and (2) he was entitled to present a reasonable-
mistake-of-age defense. In addition, he argues that the indictment was procured
through perjured testimony, that problems during voir dire should have resulted in a
mistrial, and that the evidence was insufficient to support his conviction. We affirm.

                                           I.

       On the evening of September 2, 2006, members of the Caruthersville Police
Department received a 911 emergency dispatch to 801 West Eighth Street in
Caruthersville, Missouri to investigate a possible kidnapping. When the officers
arrived at the residence, a 16-year old female (“the Victim”) was standing outside and
got into the officers’ police car. She told the officers that she had been kidnapped in
Oklahoma City, Oklahoma. While the Victim was in the police car, Wilson drove up
in his vehicle and the Victim told the officers that he was the person who had
kidnapped her. She said that Wilson had forced her to work as a prostitute and exotic
dancer and that he had ecstasy pills and crack cocaine in the house. She also said that
her bags and clothing were still in the house. Based on this information, the officers
arrested Wilson.

       One of the arresting officers, Assistant Chief Tony Jones (“Officer Jones”), then
went to the prosecuting attorney’s office to prepare an application and affidavit for a
warrant to search Wilson’s residence and vehicle. Officer Jones also directed Officer
Tina Cook (“Officer Cook”) to interview the Victim. During this interview, the
Victim told Officer Cook that Wilson had videotaped her engaging in various sexual
acts using a video camera and his cellular phone. The Victim told Officer Cook that
Wilson kept the video camera on the floor of the front room of his residence. She also
told Officer Cook that Wilson kept drugs and a handgun in a closet on the first floor.



                                          -2-
       While Officer Cook was interviewing the Victim, Officer Jones was at the
prosecuting attorney’s office working on the warrant application. After the
application and affidavit were typed, but before they were sworn to by Officer Jones,
Officer Cook called prosecuting attorney Mike Hazel and informed him of what the
Victim had said during her interview. Hazel added this information in handwriting
to the warrant application.

        Based on this additional information, Officer Jones obtained a warrant to search
Wilson’s residence and vehicle for controlled substances and the Victim’s personal
belongings. Immediately prior to executing the warrant, Officer Cook briefed the
other officers about her interview with the Victim. During the search, Officer Cook
found a video camera on the floor of Wilson’s front room, precisely where the Victim
said it would be. Officer Cook removed the video tape and left the camera at Wilson’s
residence. Another officer seized a handgun found in a downstairs closet. While
searching Wilson’s Cadillac, Officer Jones found a cellular phone with a built-in
camera. Although there is some ambiguity in the record about what happened next,
Officer Jones eventually opened the phone and observed pornographic photographs
stored on it.

       At this point, the facts take an odd turn. Officer Jones had fathered two
children with a woman named Jennifer Selvege. At the time of the search, Selvege
was romantically involved with Wilson, apparently to Officer Jones’s disapproval.
Officer Jones had previously asked Selvege not to allow their children to be around
Wilson. After finding the phone in Wilson’s vehicle, Officer Jones called Selvege to
tell her about the photographs and reiterate his request that she not permit their
children to be around Wilson. At the suppression hearing, Selvege testified that, when
she was at the Caruthersville police station on a date sometime after the execution of
the search warrant, Officer Jones showed her the images stored on the phone. Officer
Jones denied that he ever showed Selvege the phone.



                                          -3-
       Several months after the execution of the search warrant, Federal Bureau of
Investigation Agent Herbert Stapleton (“Agent Stapleton”) went to Wilson’s residence
to execute a federal arrest warrant for the crime of being a felon in possession of a
firearm. Agent Stapleton was aware of the Victim’s child pornography allegations
against Wilson. While executing the arrest, he recognized the video camera from
photographs he had seen of the prior search. Because of his belief that the camera
might be relevant to the child pornography accusations, Agent Stapleton seized the
video camera. Federal agents later sought and obtained a search warrant to search the
data stored on the cellular phone and videotape.

      Wilson was subsequently indicted on several charges: one count of transporting
a minor across state lines for criminal sexual activity in violation of 18 U.S.C. §
2423(a), two counts of producing child pornography in violation of 18 U.S.C. §
2251(a), one count of being a felon in possession of a firearm in violation of 18 U.S.C.
§ 922(g), and two counts of possessing child pornography in violation of 18 U.S.C.
§ 2252A(a)(5)(B). Wilson did not challenge the indictment before the district court.
He now alleges for the first time that his indictment was procured through the
Victim’s perjured testimony.

       Wilson filed a motion to suppress the videotape, video camera, cellular phone,
and firearm on the theory that the seizure of these items was unlawful because they
were not listed with particularity in the search warrant. The district court denied the
motion to suppress, explaining that all of these items were in “plain view” and
therefore a warrant was not required for their seizure. Wilson now contends that the
criminal character of these items was not “immediately apparent” as required by the
plain view doctrine. See, e.g., United States v. Khabeer, 

, 482 (8th Cir.
2005); United States v. Weinbender, 

, 1330 (8th Cir. 1997). Wilson
does not appeal the seizure of the firearm.

      During the pre-trial conference, the government moved to dismiss the
possession of child pornography charges. As the government acknowledges, this was

                                          -4-
done to relieve the prosecution of the need to prove that Wilson knew that the Victim
was a minor.2 The district court granted the motion and dismissed the possession of
child pornography charges. The government also sought an order prohibiting Wilson
from presenting to the jury any evidence suggesting that he mistakenly believed the
Victim to be 18 or older. The district court granted this request as well and approved
the government’s proposed jury instruction, which omitted any reference to scienter
or a reasonable-mistake-of-age defense.

       During voir dire, Wilson moved for a mistrial based on his allegation that the
jury pool was biased against him. One of the prospective jurors had related a story
about her daughter who had been kidnapped and forced into prostitution. Wilson
claims that several jurors were crying in response to this story, and that this display
of emotion compromised the jury’s objectivity. The district court denied the request
for a mistrial. Finally, at the close of the government’s evidence, Wilson requested
a judgment of acquittal arguing that the evidence was legally insufficient to support
a conviction. The district court denied his request.

                                         II.

       Wilson seeks suppression of the videotape, camera, and cellular phone on the
grounds that they were not lawfully seized under the “plain view” exception to the
warrant requirement. “The plain view doctrine allows a police officer to seize
evidence without a warrant when (1) the officer did not violate the Fourth Amendment
in arriving at the place from which the evidence could be plainly viewed, (2) the
object’s incriminating character is immediately apparent, and (3) the officer has a


      2
       Scienter is an element of the crime of possessing, but not producing, child
pornography. Compare 18 U.S.C. § 2252A(a)(5)(B) (possession), with 18 U.S.C. §
2251(a) (production), and United States v. X-Citement Video, Inc., 

, 76
n.5 (1994) (noting that “producers may be convicted under § 2251(a) without proof
they had knowledge of age”).

                                         -5-
lawful right of access to the object itself.” United States v. Abumayyaleh, 

, 648-49 (8th Cir. 2008) (quotation omitted); see also Horton v. California, 

, 136-37 (1990). “We review the district court’s findings of fact for clear
error and review Fourth Amendment seizures de novo.” 

(citation omitted).

      Wilson limits his appeal to whether the incriminating character of the seized
items was immediately apparent. “Evidence is immediately apparent if there is
probable cause to associate the property [seized] with criminal activity.” United
States v. Armstrong, 

, 1163 (8th Cir. 2009) (quotation omitted).
“Probable cause demands not that an officer be sure or certain but only that the facts
available to a reasonably cautious man would warrant a belief that certain items may
be contraband or stolen property or useful as evidence of a crime.” United States v.
Weinbender, 

, 1330 (8th Cir. 1997) (quotation omitted). “In
determining whether this requirement is met, we may consider the collective
knowledge of the officers executing the searches.” 

(quotation omitted).

       Relying solely on Arizona v. Hicks, 

(1987), Wilson argues that
the incriminating evidence contained on the video tape, camera, and phone was not
immediately apparent because police had to manipulate those items before viewing
the material stored therein. In Arizona v. Hicks, the Supreme Court held that the plain
view exception did not apply where officers, lacking probable cause to associate
stereo equipment with criminal activity, moved the equipment to read and record its
serial numbers. 

Wilson’s reliance on Arizona v. Hicks is misplaced
because the officers had probable cause to believe that the items were connected to
criminal activity without viewing their contents.

      The Victim informed Officer Cook that Wilson had used his cellular phone and
a video camera to record her engaging in underage sexual activity. When Officer
Cook discovered the video camera lying in the same location the Victim had

                                         -6-
described, she removed the tape. Furthermore, Officer Jones knew the details of
Officer Cook’s interview with the Victim before he seized the cellular phone. Finally,
Agent Stapleton was familiar with the Victim’s allegations and recognized the video
camera from pictures of the earlier search when he seized the camera during Wilson’s
subsequent arrest on federal gun charges. Due to this information, probable cause
existed, and the incriminating nature of each of the items was immediately apparent.
Thus, unlike the stereo equipment in Arizona v. Hicks, the tape, video camera, and
phone fall under the plain view exception, and the seizure of these items was proper.

        In addition to his plain view challenge, Wilson also argues that the cellular
phone was inadmissible based on gaps in its chain of custody. During the pre-trial
suppression hearing, Jennifer Selvege testified that Officer Jones had shown her the
images on the phone at a date sometime after the initial search and seizure, an
allegation that Officer Jones denied. The officer in charge of logging and storing
evidence at the Caruthersville Police Department, Frank Cervantes, testified at trial
that he did not receive the cellular phone into storage until September 11, 2006, nine
days after the search on September 2. Another officer, Sergeant Michael Coleman,
testified that he had stored the phone in his desk drawer during the nine day interim.

       “We review a district court’s decision to admit evidence over an objection for
an abuse of discretion.” United States v. Cannon, 

, 1503 (8th Cir. 1996),
abrogated on other grounds by Watson v. United States, 

(2007). “[I]n
order for evidence to be admissible, a chain of custody must exist that shows a
reasonable probability that the evidence has not been changed or altered.” United
States v. Lothridge, 

, 504 (8th Cir. 2003). “In making this determination,
absent a showing of bad faith, ill will, or proof of tampering, the court operates under
a presumption of integrity for the physical evidence.” 

. The
location and custody of the cellular phone were adequately identified and Wilson has
failed to aver any facts showing change or alteration of the images on the cellular
phone. Accordingly, he has failed to rebut the presumption of integrity. As a result,
the district court did not abuse its discretion in admitting the cellular phone.

                                          -7-
                                          III.

       Wilson challenges the jury instructions on various grounds. First, he argues
that his due process rights were violated because the jury was not instructed that the
government must prove he knew the Victim’s age. Second, he contends that the First
Amendment requires that he be permitted to argue to the jury that he was reasonably
mistaken as to the Victim’s age. District courts have “broad discretion in formulating
jury instructions.” United States v. Farish, 

, 821 (8th Cir. 2008)
(quotation omitted).

       With regard to his first argument, Wilson acknowledges that section 2251(a)
contains no scienter requirement.3 See, e.g., X-Citement 

n.5
(“producers may be convicted under § 2251(a) without proof they had knowledge of
age”); United States v. Deverso, 

, 1257 (11th Cir. 2008). His sole
argument for requiring the government to prove knowledge of the Victim’s age is the
fact that the government in a previous production-of-child-pornography case, United
States v. Kent, 

(8th Cir. 2008), did not object to a jury instruction
requiring proof of knowledge as an element of the offense. Wilson claims that the
failure to object to the scienter requirement in the Kent case makes it inequitable to
convict him (and apparently any other future defendant) without proving knowledge
of the Victim’s age. He cites no authority for this claim, and we can find none. Kent
has no relation to the current case and the district court did not abuse its discretion


      3
         Wilson does not raise this argument with respect to his conviction for
“knowingly transport[ing] an individual who has not attained the age of 18 years
. . . with intent that the individual engage in prostitution” under 18 U.S.C. § 2423(a).
We note, without deciding, that other courts of appeals have held that section 2423(a)
does not require that the defendant know the victim’s underage status. See United
States v. Jones, 

, 538 (4th Cir. 2006); United States v. Griffith, 

, 351 (2d Cir. 2002); United States v. Taylor, 

, 997 (9th Cir. 2001);
United States v. Scisum, 

, 1485 (10th Cir. 1994); United States v.
Hamilton, 

, 173 (3d. Cir. 1972) (per curiam).

                                          -8-
when it denied Wilson’s request to include a scienter requirement in the jury
instructions.

       In a somewhat different version of this challenge, Wilson also alleges that his
due process rights were violated because the district court refused to submit to the jury
Eighth Circuit Model Jury Instruction number 6.18.2422B, which instructs that the
defendant must believe the victim to be underage for charges of enticing a minor to
engage in sexual activity under 18 U.S.C. § 2422(b). There are two insurmountable
problems with this claim. First, model jury instructions are just that, models. They
are not mandatory, United States v. Evans, 

, 1081 n.3 (8th Cir. 2001),
and their formulation is largely entrusted to the discretion of the district court, 

. Second, the instruction requested by Wilson does not apply to any
of the charges for which he was indicted. Model Instruction 6.18.2422B is an
instruction for enticing a minor to engage in unlawful sexual activity in violation of
18 U.S.C. § 2422(b). Wilson was not charged under section 2422(b) and, therefore,
it was neither a denial of due process nor an abuse of discretion to deny his requested
instruction.

       Wilson’s more colorable claim is that not allowing a reasonable-mistake-of-age
defense to charges under section 2251(a) makes the statute overbroad, thereby chilling
protected speech in violation of the First Amendment. “[S]ection 2251(a) . . . does
not, on its face, make reasonable mistake of age an affirmative defense.” United
States v. United States Dist. Ct., 

, 538 (9th Cir. 1988). Nonetheless,
Wilson urges that, absent such a defense, producers of pornography will be deterred
from creating lawful materials that depict youthful-looking adult actors.

       Although the First Amendment protects non-obscene adult pornography,
sexually explicit materials involving persons under the age of 18 enjoy no
constitutional protection. See New York v. Ferber, 

, 764 (1982). Given
the complete absence of free speech rights once one crosses this threshold, Wilson
argues that strict liability under section 2251(a) will inhibit producers of adult

                                           -9-
pornography from engaging in protected speech. This argument operates in tandem
with the common law’s background presumption that the mens rea requirement
typically cannot be overcome merely by an omission of that element in the text of a
criminal statute. See United States v. United States Gypsum Co., 

, 438
(1978) (“[F]ar more than the simple omission of the appropriate phrase from the
statutory definition is necessary to justify dispensing with an intent requirement.”);
Morissette v. United States, 

, 263 (1952) (reading knowledge
requirement into federal embezzlement statute where plain language of statute did not
contain any scienter element). Finally, the Supreme Court has held that the First
Amendment requires that knowledge of the victim’s age be proven to support a
conviction under 18 U.S.C. § 2252, which prohibits the distribution of child
pornography. X-Citement 

. Wilson argues that, by implication,
X-Citement Video also requires that alleged producers be permitted to defend on the
grounds that they were reasonably mistaken as to the victim’s age.

       However, X-Citement Video distinguished between producers and those who
distribute or possess child pornography. 

n.5. This distinction belies
Wilson’s attempted analogy between the judicially created scienter requirement in
section 2252 and his requested reasonable-mistake-of-age defense to charges under
section 2251. Producers of child pornography, unlike distributors and downstream
consumers, are more akin to statutory rapists who are not entitled to any mens rea
safeguards. See X-Citement 

n.2 (comparing producers charged
under section 2251 with statutory rapists and distinguishing both from distributors and
recipients of child pornography charged under section 2252); 

n.8 (noting that the common-law presumption in favor of mens rea did not apply
to “sex offenses, such as rape, in which the victim’s actual age was determinative
despite defendant’s reasonable belief that the girl had reached age of consent”). This
exception to the presumption in favor of mens rea is a function of the fact that
producers are in a better position to verify the age of the actors they employ. X-
Citement Video at 76 n.5 (“The difference in congressional intent with respect to §
2251 versus § 2252 reflects the reality that producers are more conveniently able to

                                         -10-
ascertain the age of performers. It thus makes sense to impose the risk of error on
producers.”). Thus, because producers may more confidently determine the age of
their actors, their speech is less apt to be inhibited by the fear of mistake or deception.

       We have not had occasion to address this issue in the context of section
2251(a). Other circuits have split as to whether the First Amendment requires reading
a reasonable-mistake-of-age defense into the statute. Compare United States Dist. 

(holding that “imposition of major criminal sanctions on these
defendants without allowing them to interpose a reasonable mistake of age defense
would choke off protected speech”), with United States v. Deverso, 

,
1258 (11th Cir. 2008) (holding that “the Constitution does not mandate a mistake of
age defense under § 2251”), and United States v. Crow, 

, 236 (5th Cir.
1999) (holding that nothing requires reading scienter requirement into section
2251(a)). We have, however, had occasion to rule on this issue in the context of a
virtually identical Iowa statute. See Gilmour v. Rogerson, 

(8th Cir.
1997). Like its federal counterpart, Iowa Code § 728.12(1) criminalizes the
production of child pornography.4 Also like section 2251(a), it neither contains a
mens rea requirement nor does it permit an affirmative mistake-of-age defense.

      In Gilmour, the defendant sought habeas review of his state court conviction for
producing child pornography in violation of section 728.12(1) on the grounds that the
First Amendment required that he be permitted to argue to the jury that he was


      4
       Section 728.12(1) reads

             It shall be unlawful to employ, use, persuade, induce, entice,
             coerce, solicit, knowingly permit, or otherwise cause or attempt to
             cause a minor to engage in a prohibited sexual act or in the
             simulation of a prohibited sexual act. A person must know, or
             have reason to know, or intend that the act or simulated act may
             be photographed, filmed, or otherwise preserved . . . in any other
             type of storage system.

                                           -11-
reasonably mistaken as to the victim’s age. We rejected this argument. We explained
that, as the Supreme Court noted in X-Citement Video, the background assumption
of mens rea is inappropriate for some strict liability sex crimes, such as statutory rape.

(discussing X-Citement 

n.2). Thus,
the First Amendment calculus is different depending on the proximity of the defendant
to the victim. 

distributors, the sexually exploitive producer deals
directly with the child victim, like the statutory rapist who has traditionally been
denied a mistake-of-age defense.”); see also X-Citement 

n.2
(“The opportunity for reasonable mistake as to age increases significantly once the
victim is reduced to a visual depiction, unavailable for questioning by the distributor
or receiver.”). We concluded that this fact, combined with the very strong interest the
state has in protecting children from sexual exploitation, belied any claim that the First
Amendment required a reasonable-mistake-of-age 

.

       As in Gilmour, “we must weigh the statute’s chilling effect against its ‘plainly
legitimate 

(quoting Osborne v. Ohio, 

, 112
(1990)). Given the functional identity of section 2251(a) and Iowa Code § 728.12(1),
the First Amendment calculus is likewise identical between the two. The analogy of
producers to statutory rapists serves to overcome the background presumptions of
mens rea and scienter. Furthermore, given the opportunity producers have to verify
the age of the actors they employ, we do not think the risk of error or fraud in
determining someone’s age is significant enough to chill “a substantial amount of
protected speech . . . .” Ashcroft v. Free Speech Coal., 

, 255 (2002); see
also Osborne v. Ohio, 

, 112 (1990) (“[T]he scope of the statute does not
render it unconstitutional unless its overbreadth is not only real, but substantial as
well, judged in relation to the statute’s plainly legitimate sweep.” (quotation omitted)).
These two factors, combined with the strong interest the state has in protecting
children from sexual exploitation, fatally undermine Wilson’s First Amendment claim.
Thus, we hold that the First Amendment does not require a reasonable-mistake-of-age
defense to charges of producing child pornography in violation of section 2251(a).


                                          -12-
                                           IV.

       Wilson alleges that the district court abused its discretion in refusing to declare
a mistrial based on his claim that four members of the jury pool were crying during
voir dire in response to another prospective juror’s emotional story about her daughter
who had been a victim of forced prostitution. The juror who related the story, as well
as the four who Wilson claims were crying, were struck from the jury panel. All
remaining jurors stated that they were able to remain impartial and objective.

        “The Sixth Amendment right to jury trial ‘guarantees to the criminally accused
a fair trial by a panel of impartial, indifferent jurors.’” United States v. Lussier, 

, 841 (8th Cir. 2005) (quoting Irvin v. Dowd, 

, 722 (1961)). We
review a denial of a motion for mistrial for abuse of discretion. United States v.
Davis, 

, 914 (8th Cir. 2008), cert. denied 

(2009). “We
defer to the discretion of the trial court, particularly in the absence of any showing of
actual bias.” 

. The district court questioned the jurors
about their ability to remain impartial. They assured the court that they could remain
objective and properly weigh the evidence for and against Wilson. Wilson’s
generalized claim of jury bias is insufficient to establish that the trial court abused its
discretion in refusing to declare a mistrial. See United States v. Parmley, 

, 924 (8th Cir. 1997) (per curiam) (district court did not abuse its discretion in
accepting jury assurances that their knowledge of prior mistrial would not affect their
ability to give a fair trial).

                                           V.

       Wilson challenges his indictment based on an allegation that the prosecution
committed misconduct by knowingly presenting the Victim’s false testimony to the
grand jury. “[G]rand jury proceedings are afforded a strong presumption of regularity,
and a defendant seeking to overcome that presumption faces a heavy burden.” United
States v. Hintzman, 

, 843 (8th Cir. 1986). “The remedy of dismissal for

                                           -13-
an indictment due to grand jury abuse is appropriate only upon a showing of actual
prejudice to the accused.” United States v. Kouba, 

, 774 (8th Cir. 1987).

       Wilson claims that the Victim told the grand jury that he kidnapped her from
Oklahoma, whereas she now acknowledges that she left with him willingly.
According to the government, she never alleged to the grand jury that she had been
kidnapped. The government argues that the Victim only mentioned the kidnapping
in her testimony concerning what she told the police when they arrived at Wilson’s
residence.

       Regardless of which version is accurate, Wilson’s challenge to the indictment
is without merit because “[e]ven assuming . . . that there were errors in the charging
decision that may have followed from the conduct of the prosecution . . . , the petit
jury’s guilty verdict rendered those errors harmless.” 

.
“Except in cases involving racial discrimination in the composition of the grand jury,
a guilty verdict by the petit jury generally excuses errors at the grand jury level that
are ‘connected with the charging decision . . . .’” 

(quoting
United States v. Mechanik, 

, 70 (1986)). “A petit jury’s ‘subsequent
guilty verdict not only means that there was probable cause to believe that the
defendant[] [was] guilty as charged, but that [he was] in fact guilty as charged beyond
a reasonable doubt.” 

(quoting 

).

                                          VI.

       Finally, Wilson charges that the evidence was insufficient to support his
conviction on the grounds that the Victim perjured herself before the grand jury and
that this undermines the evidentiary basis for the petit jury’s verdict. He also charges
that Officer Jones, being motivated by a personal “vendetta” against the defendant,
removed the cellular phone from the evidence locker and tampered with it. “[O]ur
review of the evidence the Government presented at trial is highly deferential.” United
States v. Kirk, 

, 1111 (8th Cir. 2008) (quotation omitted). “Accordingly,

                                          -14-
we may reverse only if no rational jury could have found the essential elements of the
crime beyond a reasonable doubt.” 

Victim’s grand jury testimony, we are at a loss as to how
allegations of perjury before the grand jury, meritorious or otherwise, could affect the
sufficiency of evidence offered at trial. The Victim testified at trial that Wilson did not
kidnap her and that she left Oklahoma willingly in the expectation that he would
employ her as a prostitute in Missouri. Wilson does not challenge this testimony.
Thus, his allegations of perjured testimony before the grand jury do not support his
insufficiency claim because the conviction by the petit jury was based on testimony the
veracity of which is not in dispute. This testimony was sufficient to support conviction
on the charge of transportation of a minor to engage in criminal sexual activity under
18 U.S.C. § 2423(a).

       We have already discussed Wilson’s failure to show the inadmissibility of the
cellular phone due to gaps in its chain of custody. In any event, the data files stored
on his phone were not the only evidence that he produced images of a minor engaged
in sexually explicit conduct. The video tape, especially when combined with witness
testimony, contained ample evidence to support the guilty verdict on two counts of
producing child pornography in violation of 18 U.S.C. § 2251(a). The images stored
on his cellular phone only iced the cake of his conviction.

       Regarding his conviction for being a felon in possession of a firearm, Wilson
stipulated that he had been previously convicted of a felony. He does not challenge the
seizure of the firearm from his residence. Witnesses testified that the firearm belonged
to Wilson. This was sufficient to support a conviction under 18 U.S.C. § 922(g).

                                           VII.

      Accordingly, the judgment is affirmed.


                                           -15-