NOT RECOMMENDED FOR PUBLICATION 

File Name: 18a0180n.06 

No. 17-5689 

UNITED STATES COURT OF APPEALS 

FOR THE SIXTH CIRCUIT 

UNITED STATES OF AMERICA, 

 Plaintiff-Appellee, 

v. 

ARTHUR WAYNE KNIFFLEY, 

 Defendant-Appellant. 

) 

) 

) 

) 

) 

) 

) 

) 

) 

ON APPEAL FROM THE 

UNITED STATES DISTRICT 

COURT FOR THE WESTERN 

DISTRICT OF KENTUCKY 

BEFORE: BOGGS, BATCHELDER, and THAPAR, Circuit Judges. 

BOGGS, Circuit Judge. Arthur Kniffley appeals his conviction and sentence for 

producing child pornography, in violation of 18 U.S.C. § 2251(a), (e). We affirm his conviction 

and sentence. 

I 

a. Kniffley’s 2010 “Distributing and Possessing” Conviction 

In 2008, the FBI discovered that a computer associated with a Louisville IP address had 

sent child pornography to an undercover agent. The Louisville FBI traced the computer’s IP 

address to Kniffley’s home. On October 29, 2008, the FBI executed a search warrant at 

Kniffley’s home and seized a Dell computer and a Polaroid digital camera. Forensic analysis 

showed that the devices contained 985 images of child pornography, including roughly 

100 images and videos of a young African-American boy that the FBI could not then identify. 

That same day, an FBI agent interviewed Kniffley. Kniffley admitted that he had used a 

file-sharing program to obtain child pornography and indicated to the agent which photos he had 
No. 17-5689, United States v. Kniffley 

-2- 

possessed and distributed. Kniffley was charged with distributing and possessing 985 images 

“portraying a minor in a sexual performance,” in violation of 18 U.S.C. § 2252A(a)(2)(B) and § 

2252A(a)(5)(B). Kniffley pleaded guilty to those charges and was sentenced to 210 months of 

imprisonment in 2010. 

b. Kniffley’s 2013 “Producing” Charges, Trial, and Sentencing 

i. Charges for “Producing” 

In July 2013, a young man named James Moore came forward to the FBI and identified 

himself as one of the victims in the photographs found on Kniffley’s computer. Moore explained 

that he knew Kniffley because Kniffley had been romantically involved with Moore’s aunt. 

While Kniffley was dating Moore’s aunt, Kniffley frequently spent time alone with Moore and 

bought him expensive gifts. During this time, Moore stated that Kniffley had taken pornographic 

photographs of Moore. Moore was between 11 and 15 years old. 

The FBI re-analyzed the photos that were seized from Kniffley’s computer and camera 

and determined that 35 of the photos seized in 2008 were photographs and videos of Moore. 

On August 19, 2015, a federal grand jury charged Kniffley with three counts of 

producing child pornography, in violation of 18 U.S.C. § 2251(a), (e). Each of the images that 

Kniffley was charged with producing came from the camera and computer seized in 2008. 

ii. Trial on “Producing” 

Kniffley filed a motion to dismiss the indictment, arguing that his previous prosecution 

for distributing and possessing the 985 pornographic images foreclosed a prosecution for 

producing 35 of those same images. The district court denied the motion to dismiss, relying on 

the Blockburger test to hold that the various statutes each required proof of a fact that the others 

did not. See Blockburger v. United States, 284 U.S. 299 (1932).
No. 17-5689, United States v. Kniffley 

-3- 

On June 21, 2016, the government filed a motion in limine to admit evidence of 

Kniffley’s 1996 Kentucky state conviction for three counts of first-degree sexual abuse. Fed. R. 

Evid. 414 allows the prosecution to introduce evidence of previous child molestation in a case in 

which the defendant is charged with child molestation. “Child molestation” is defined broadly in 

the rule. In response to the government’s motion in limine, Kniffley raised a Fed. R. Evid. 403 

objection arguing that evidence of the 1996 conviction was substantially more unfairly 

prejudicial than it was probative. The district court overruled Kniffley’s objection and allowed 

the government to offer testimony from a detective who secured Kniffley’s confession to the 

1996 charges and evidence of the conviction itself. 

During trial, Kniffley requested that the jury be instructed that, if convicted, he was 

subject to a mandatory life sentence under 18 U.S.C. § 3559(e) because of his 1996 Kentucky 

state-court conviction. The district court rejected Kniffley’s proposed jury instruction, 

emphasizing that the jury’s “job is to decide guilt or innocence.” Instead, the district court 

instructed the jury that “it will be [the judge’s] job to decide what the appropriate punishment 

should be.” 

The jury found Kniffley guilty of all three counts of producing child pornography. 

iii. Sentencing for “Producing” 

Following Kniffley’s conviction, the district court conducted a sentencing hearing. 

18 U.S.C. § 3559(e)(1) requires a sentence of life imprisonment when “[a] person who is 

convicted of a Federal sex offense in which a minor is the victim . . . has a prior sex conviction in 

which a minor was the victim, unless the sentence of death is imposed.”1

 Kniffley’s 1996 

 

1

 Even without the mandatory sentencing statute, Kniffley’s Sentencing Guidelines range was also life 

imprisonment. 
No. 17-5689, United States v. Kniffley 

-4- 

conviction for child molestation qualifies as a prior sex conviction in which a minor was the 

victim. 

Kniffley moved the district court to sentence him without regard to the mandatory 

minimum sentence of life imprisonment imposed by 18 U.S.C. § 3559(e)(1). The district court 

denied the motion. The district court sentenced Kniffley to concurrent terms of life 

imprisonment on each of the three counts, to run concurrently with his prior federal sentence, 

and to supervised release for life. 

II 

Kniffley raises four arguments on appeal. First, Kniffley argues that his conviction for 

producing child pornography violates the Double Jeopardy Clause of the Fifth Amendment 

because his 2010 conviction for possessing and distributing child pornography involved some of 

the same images. This court reviews de novo a district court’s denial of a motion to dismiss on 

double-jeopardy grounds. United States v. Cameron, 953 F.2d 240, 243 (6th Cir. 1992). 

Second, Kniffley argues that the imposition of a mandatory life sentence pursuant to 

18 U.S.C. § 3559(e) violates the Eighth Amendment’s prohibition on cruel and unusual 

punishment because it is “grossly disproportionate” to the crime and circumstances of this case, 

under Harmelin v. Michigan, 501 U.S. 957 (1991). An Eighth Amendment challenge to a 

sentence is reviewed de novo. United States v. Jones, 569 F.3d 569, 573 (6th Cir. 2009). 

Third, Kniffley argues that the jury should have been instructed that Kniffley was subject 

to a mandatory life sentence. A district court’s decision on a proposed jury instruction is 

reviewed for an abuse of discretion. United States v. Ursery, 109 F.3d 1129, 1136 (6th Cir. 

1997). A refusal to give requested instructions is reversible error only if (1) the instructions are 

correct statements of the law; (2) the instructions are not substantially covered by other delivered 
No. 17-5689, United States v. Kniffley 

-5- 

charges; and (3) the failure to give the instruction impairs the defendant’s theory of the case. 

United States v. Newcomb, 6 F.3d 1129, 1132 (6th Cir. 1993). 

Fourth, Kniffley argues that evidence of his 1996 Kentucky conviction should have been 

excluded under Fed. R. Evid. 403 because its probative value was substantially outweighed by 

the danger of unfair prejudice. A district court’s rulings on evidentiary matters are reviewed for 

an abuse of discretion. United States v. Underwood, 859 F.3d 386, 392–93 (6th Cir. 2017). 

III 

a. 2013 Conviction for “Producing” Does Not Violate Double Jeopardy 

Kniffley first argues that his § 2251(a) prosecution for producing child pornography 

violates the Double Jeopardy Clause of the Fifth Amendment because he was previously 

prosecuted for possessing child pornography under § 2252A(a)(5)(B). The Double Jeopardy 

Clause of the Fifth Amendment provides that “nor shall any person be subject for the same 

offence to be twice put in jeopardy of life or limb . . . .” U.S. CONST. amend. V. In Blockburger 

v. United States, the Supreme Court created the framework to determine whether a subsequent 

prosecution was for the “same offence”: 

The applicable rule is that, where the same act or transaction constitutes a 

violation of two distinct statutory provisions, the test to be applied to determine 

whether there are two offenses or only one, is whether each provision requires 

proof of a fact which the other does not. 

Blockburger, 284 U.S. at 304. 

Thus, the court must analyze the statutory elements of the two charges. The “producing” 

statute, which forms the basis of Kniffley’s current appeal, covers: 

Any person who employs, uses, persuades, induces, entices, or coerces any minor 

to engage in, or who has a minor assist any other person to engage in, or who 

transports any minor in or affecting interstate or foreign commerce, or in any 

Territory or Possession of the United States, with the intent that such minor 

engage in, any sexually explicit conduct for the purpose of producing any visual 
No. 17-5689, United States v. Kniffley 

-6- 

depiction of such conduct or for the purpose of transmitting a live visual depiction 

of such conduct, shall be punished as provided under subsection (e), if such 

person knows or has reason to know that such visual depiction will be transported 

or transmitted using any means or facility of interstate or foreign commerce or in 

or affecting interstate or foreign commerce or mailed, if that visual depiction was 

produced or transmitted using materials that have been mailed, shipped, or 

transported in or affecting interstate or foreign commerce by any means, including 

by computer, or if such visual depiction has actually been transported or 

transmitted using any means or facility of interstate or foreign commerce or in or 

affecting interstate or foreign commerce or mailed. 

18 U.S.C. § 2251(a) (emphasis added). 

The “distributing and possessing” statute, the basis for Kniffley’s 2010 conviction, 

covers: 

(a) Any person who- 

(2) knowingly receives or distributes— 

(B) any material that contains child pornography that has been mailed, or 

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

transported in or affecting interstate or foreign commerce by any means, including 

by computer; 

(5) either- 

(B) knowingly possesses, or knowingly accesses with intent to view, any 

book, magazine, periodical, film, videotape, computer disk, or any other material 

that contains an image of child pornography that has been mailed, or shipped or 

transported using any means or facility of interstate or foreign commerce or in or 

affecting interstate or foreign commerce by any means, including by computer, or 

that was produced using materials that have been mailed, or shipped or 

transported in or affecting interstate or foreign commerce by any means, including 

by computer . . . .” 

18 U.S.C. § 2252A(a)(2)(B), (a)(5)(B). 

Kniffley argues that his 2010 conviction for distributing and possessing child 

pornography bars the 2013 prosecution for producing some of the same images. Kniffley 

reasons that you cannot “produce” an image without simultaneously “possessing” it. Kniffley 

relies on United States v. Ehle, 640 F.3d 689, 694 (6th Cir. 2011), in which this court held that 
No. 17-5689, United States v. Kniffley 

-7- 

convictions for receiving and possessing the same child pornography violated double jeopardy. 

In a straightforward application of Blockburger, this court found that the “possessing provision 

does not require[] proof of any fact that the receiving provision does not.” Ibid. And that “one 

obviously cannot ‘receive’ an item without then also ‘possessing’ that item, even if only for a 

moment.” Id. at 694–95. Kniffley argues that, similarly, he could not “produce” pornography 

without simultaneously “possessing” it. 

Kniffley’s argument has intuitive appeal, but it is not legally persuasive. At first blush, it 

seems metaphysically impossible to “produce” an image in the lay sense without simultaneously 

possessing it. After all, Kniffley’s method of production, literally photographing Moore using 

Kniffley’s camera, would simultaneously qualify as both producing and possessing, under the 

terms of the statutes. However, the Blockburger analysis requires this court to analyze the legal 

elements of the two charges, not the common sense meaning of the terms “possess” and 

“produce” or the method by which this particular defendant violated both statutes. 

The “producing” statute, § 2251, does not actually require the defendant to either 

distribute or possess the pornography, as required under § 2252A(a)(2)(B) and § 2252A(a)(5)(B). 

For example, it is possible to “produce” child pornography under the terms of § 2251 by 

persuading a minor to take sexually explicit photos of themselves or by transporting a minor with 

the intent that someone else takes sexually explicit photographs of them. In other words, 

persuading or facilitating the creation of child pornography is itself “producing” child 

pornography, even though the defendant never “possessed” or “distributed” the end result. And 

the “producing” statute, § 2251, requires proof that the defendant used a minor to produce child 

pornography, which neither the “possessing” nor the “distributing” statutes require. 
No. 17-5689, United States v. Kniffley 

-8- 

For example, someone may certainly be guilty of possessing or distributing child pornography 

without having played any role in its production. 

Because each statute requires proof of a fact that the other statute does not, Kniffley’s 

2010 conviction for distributing and possessing child pornography did not bar his 2013 

prosecution for producing some of the same images. 

b. 18 U.S.C. § 3559(e)’s Mandatory Life Sentence Does Not Violate the Eighth 

Amendment 

Kniffley next argues that his mandatory life sentence imposed pursuant to 18 U.S.C. 

§ 3559(e) is so grossly disproportionate to the offense committed that it violates the Eighth 

Amendment’s prohibition on cruel and unusual punishment. 18 U.S.C. § 3559(e)(1) requires a 

sentence of life imprisonment when “[a] person who is convicted of a Federal sex offense in 

which a minor is the victim . . . has a prior sex conviction in which a minor was the victim, 

unless the sentence of death is imposed.” Kniffley does not dispute that his 1996 Kentucky state 

court conviction for child molestation triggers § 3559(e)(1). 

The Sixth Circuit has adopted the “narrow proportionality principle” announced in 

Harmelin, 501 U.S. at 997 (Kennedy, J., concurring), finding that the Eighth Amendment “is 

offended only by an extreme disparity between crime and sentence.” Jones, 569 F.3d at 573 

(quoting United States v. Hopper, 941 F.2d 419, 422 (6th Cir. 1991)). This court will assess 

whether the gravity of the offense and the severity of the sentence “leads to an inference of gross 

disproportionality,” United States v. Abdulmutallab, 739 F.3d 891, 906 (quoting Harmelin, 

501 U.S. at 1005 (Kennedy, J., concurring)), but must “grant substantial deference to the broad 

authority that legislatures necessarily possess in determining the types and limits of punishments 

for crimes . . . .” Solem v. Helm, 463 U.S. 277, 290 (1983). 
No. 17-5689, United States v. Kniffley 

-9- 

Here, § 3559(e)(1) represents Congress’s reasoned judgment that recidivism in sexual 

crimes against children ought to trigger a much harsher sentence. The Supreme Court has held 

that Congressional imposition of harsh sentences on recidivists does not violate the Eighth 

Amendment. Ewing v. California, 538 U.S. 11, 25–26 (2003). Moreover, “[t]here can be no 

serious contention . . . that a sentence which is not otherwise cruel and unusual becomes so 

simply because it is ‘mandatory.’” Harmelin, 501 U.S. at 994–95 (noting that severe mandatory 

penalties may be cruel, but “they are not unusual in the constitutional sense”). And of course, 

the Sixth Circuit has “consistently recognized the seriousness of crimes involving the sexual 

exploitation of minors.” United States v. Ball, 530 F. App’x 505, 506 (6th Cir. 2013); see United 

States v. Hart, 635 F.3d 850, 859 (6th Cir. 2011). 

The thrust of Kniffley’s proportionality argument is that the conduct that formed the basis 

of his producing charge—using a digital camera to take photographs of 11–15-year-old Moore 

exposing his genitalia and performing manual masturbation upon himself—would only be 

subject to a mandatory minimum sentence of 15 years and a maximum of 30 years, but for his 

1996 conviction for child molestation. This is true, but it is not remotely persuasive. Kniffley 

does not fall into a class of defendants unblemished by prior sex crimes against minors. Prior to 

producing the child pornography at issue on this appeal, Kniffley pleaded guilty to molesting 

three minors under the age of 10, triggering the enhanced penalty under the recidivism statute. 

Kniffley points only to cases in which the imposition of the mandatory life sentence 

under § 3559(e)(1) appears even more reasonable, based on relatively “worse” conduct by those 

defendants. See United States v. Becker, 302 F. App’x 417, 418 (6th Cir. 2008) (noting that the 

defendant confessed to distributing a video over the internet showing the defendant molesting a 

thirteen-year-old boy). However, Kniffley cannot point to any cases in which a court has held 
No. 17-5689, United States v. Kniffley 

-10- 

that the mandatory life sentence imposed by 18 U.S.C. § 3559(e)(1) violated the Eighth 

Amendment, let alone that the facts of those non-existent cases mirror the relative severity of 

Kniffley’s previous child molestation and subsequent production of child pornography. 

In support of his proportionality argument, Kniffley also argues that had he been 

prosecuted in Kentucky state court his sentence may have been less harsh. That the Kentucky 

legislature has reached the reasoned judgment that this behavior does not require a life sentence 

does not mean that Congress’s determination to the contrary violates the Eighth Amendment. 

Kniffley’s reliance on Miller v. Alabama, 567 U.S. 460, 475 (2012), is similarly 

unavailing. In Miller, the Supreme Court held that a mandatory sentence of life imprisonment 

without parole was unconstitutional when imposed on minors. However, there are no favorable 

facts connecting Miller, in which the Court afforded extra protections to minors based partially 

on their mental vulnerability, to the present case, in which Kniffley’s previous molestation of 

vulnerable minors triggers his increased punishment. See id. at 471. While § 3559(e)(1) may be 

harsh, it is not grossly disproportionate to the underlying crime. 

c. The District Court Did Not Err By Not Instructing Jury that Kniffley Was 

Subject to a Mandatory Life Sentence 

Kniffley next argues that the district court erred both by rejecting his proposed instruction 

and by using an instruction that Kniffley says was misleading. Kniffley’s proposed jury 

instruction would have informed the jury that, if convicted, Kniffley would be subject to a 

mandatory life sentence.2

 Instead, the court provided the following instruction: 

 

2

 Kniffley submitted the following proposed jury instruction: 

Statutes Involved

Pursuant to Title 18, United States Code, Section 2251(a), “[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” is guilty of a federal criminal 

offense “if that visual depiction was produced . . . using materials that have been mailed, shipped, 

or transported in or affecting interstate or foreign commerce by any means . . . .” Pursuant to Title 
No. 17-5689, United States v. Kniffley 

-11- 

INSTRUCTION NO. 6 

If you decide that the government has proved the Defendant guilty, then it will be 

my job to decide what the appropriate punishment should be. 

Your job is to look at the evidence and decide if the government has proved the 

Defendant guilty beyond a reasonable doubt. 

i. The Rejection of Kniffley’s Proposed Instruction Was Not An Abuse 

of Discretion 

This court reviews a district court’s rejection of a proposed jury instruction for an abuse 

of discretion. Ursery, 109 F.3d at 1136. A district court’s rejection of the defendant’s proposed 

jury instruction is only reversible error if the rejected instruction was “(1) correct, (2) not 

substantially covered by the actual jury charge, and (3) so important that failure to give it 

substantially impairs [the] defendant’s defense.” Hart, 635 F.3d at 854 (quoting United States v. 

Heath, 525 F.3d 451, 456 (6th Cir. 2008)). 

Because federal judges, rather than juries, sentence defendants in non-capital cases, “it is 

well established that when a jury has no sentencing function, it should be admonished to ‘reach 

its verdict without regard to what sentence might be imposed.’” Shannon v. United States, 

512 U.S. 573, 579 (1994) (footnote omitted) (quoting Rogers v. United States, 422 U.S. 35, 40 

(1975)). This court has held that instructing a jury about the possible penalties invites the jury to 

“ponder matters that are not within [its] province, distracts [it] from [its] factfinding 

responsibilities, and creates a strong possibility of confusion.” Ibid. The Supreme Court has 

articulated two narrow exceptions to the general rule against instructing juries about sentences in 

federal criminal cases: (1) if an attorney or witness at trial misstated the consequence of a guilty 

 18, United States Code, Section 3559(e), any person convicted of violating Title 18, United States 

Code, Section 2251(a) “shall be sentenced to life imprisonment if the person has a prior sex 

conviction in which a minor was the victim . . . .” There is no parole in the federal system, and a 

person sentenced to life imprisonment will not be released on parole. 
No. 17-5689, United States v. Kniffley 

-12- 

verdict or (2) when a federal statute requires that the jury be instructed about the possible 

sentence. See id. at 587–88. Kniffley acknowledges that that neither occurred here. 

Kniffley’s proposed instruction was “substantially covered by the actual jury charge” per 

Hart because the district court correctly explained the difference between the jury’s role and the 

judge’s role in sentencing. 

ii. The Instruction Given Was Correct and Not Misleading 

Kniffley also argues that the actual instruction provided to the jury was misleading 

because it wrongly implied that the district court had discretion to avoid the statutory penalty. 

The court instructed jurors that “[i]f you decide that the government has proved the Defendant 

guilty, then it will be my job to decide what the appropriate punishment should be.” 

However, this instruction was neither incorrect nor misleading. It was the district court’s 

job to determine whether Kniffley’s 1996 Kentucky conviction satisfied the requirements of 

§ 3559(e). If the district court judge concludes that the defendant’s prior conviction triggers the 

mandatory penalty imposed by § 3559(e), then the district court has no discretion to impose an 

alternative sentence. But the district court had to determine whether Kniffley’s prior conviction 

triggered the recidivism statute in the first place. 

d. The District Court Did Not Err in Admitting Evidence of Kniffley’s 1996 

Conviction Over a Rule 403 Objection 

Kniffley also appeals the admission of evidence relating to his previous child molestation 

over his Fed. R. Evid. 403 objection. However, Kniffley’s objection faces four difficult hurdles. 

First, the balancing contemplated in Fed. R. Evid. 403 is tilted firmly towards admission rather 

than exclusion. See Fed. R. Evid. 403 (establishing that evidence will be excluded only if its 

probative value is “substantially” outweighed by the danger of unfair prejudice). Second, Fed. 

R. Evid. 414 authorizes the jury to consider previous child molestation evidence for propensity 
No. 17-5689, United States v. Kniffley 

-13- 

purposes, increasing the permissible probative weight of the evidence for Rule 403 balancing. 

United States v. Seymour, 468 F.3d 378, 384–85 (6th Cir. 2006) (noting that Rule 414 creates an 

exception to the general ban on propensity evidence). Third, the district court is granted broad 

discretion in making evidentiary rulings. Underwood, 859 F.3d at 392–93 (reviewing 

evidentiary rulings for an abuse of discretion). Fourth, admission of other-acts evidence is 

subject to harmless-error analysis. United States v. Hardy, 643 F.3d 143, 153 (6th Cir. 2011). 

Rule 414(a) provides that “[i]n a criminal case in which a defendant is accused of child 

molestation, the court may admit evidence that the defendant committed any other child 

molestation. The evidence may be considered on any matter to which it is relevant.” Fed. R. 

Evid. 414(a). Thus, Rule 414 creates an “exception to the general ban on propensity evidence” 

contained in Rule 404(b). Seymour, 468 F.3d at 385. And Rule 414 defines “child molestation” 

broadly to include “any conduct prohibited by 18 U.S.C. chapter 110.” Kniffley does not dispute 

that both his 1996 Kentucky conviction and his 18 U.S.C. § 2251 charge for producing child 

pornography fall within the definition of “child molestation” for the purposes of triggering Fed. 

Rule 414. 

However, Kniffley objected pursuant to Rule 403. Evidence shall only be excluded by 

Rule 403 if its “probative value is substantially outweighed by a danger of . . . unfair prejudice 

. . . .” Fed. R. Evid. 403. In reviewing an overruled Rule 403 objection, this court will give 

“evidence its maximum reasonable probative force and its minimum reasonable prejudicial 

value.” Seymour, 468 F.3d at 386 (quoting United States v. Schrock, 855 F.2d 327, 333 (6th Cir. 

1988)). 

The government argues that the admission of the previous child molestation was 

probative because it demonstrated Kniffley’s motive, knowledge, and intent to produce child 
No. 17-5689, United States v. Kniffley 

-14- 

pornography. To obtain a conviction under 18 U.S.C. § 2251(a), the government needed to 

prove that Kniffley had the “intent” to cause a minor to engage in sexually explicit conduct. 

That Kniffley previously intentionally molested children makes it at least somewhat more likely 

that he intentionally (rather than inadvertently) caused Moore to engage in sexually explicit 

conduct in the present case, and Rule 414 allows juries to consider evidence of previous child 

molestation for propensity purposes. See Seymour, 468 F.3d at 385. 

Kniffley counters that admission of the 1996 conviction and accompanying confession 

was not particularly probative because the previous conduct differed significantly from the 

current charge. For instance, Kniffley contrasts his previous misconduct, physically molesting 

three children under the age of ten more than twenty times, with photographing the somewhat 

older Moore on just three separate occasions. However, that the previous misconduct is more

serious does not mean that the previous molestation does not provide some evidence of 

Kniffley’s intent to commit the current charge. 

Kniffley also argues that the previous child molestation was too remote to be probative. 

However, this court has held that admitting evidence of child molestation that occurred twenty 

years prior to the current charges over a Rule 403 objection was not an abuse of discretion, 

noting that Congress intended there to be “no time limit” on the admissibility of evidence of 

previous child molestation. Underwood, 859 F.3d at 393. 

Next, Kniffley argues that introducing testimony from the detective who obtained 

Kniffley’s 1996 confession, as opposed to merely introducing the conviction itself, was unfairly 

prejudicial because it was inflammatory. However, this is similar to Underwood where this court 

upheld the introduction of testimony describing the abuse and not merely the conviction. 

Underwood, 859 F.3d at 389, 393–94. Kniffley is correct that the evidence of previous child 
No. 17-5689, United States v. Kniffley 

-15- 

molestation was not particularly probative in this case, but it cannot be said that Kniffley 

suffered “unfair” prejudice, and it certainly cannot be said that its probative value was 

“substantially outweighed” by that unfair prejudice. 

Even if there were a danger of unfair prejudice, the district court’s strong limiting 

instruction mitigated the unfair prejudice. See Murray v. Superintendent, Kentucky State 

Penitentiary, 651 F.2d 451, 453 (6th Cir. 1981) (noting that a “a jury is presumed to heed an 

instruction directing it not to consider a defendant’s prior criminal record as evidence in guilt.”). 

The district court instructed the jury that: 

INSTRUCTION NO. 4 

You have heard testimony that the Defendant committed crimes other than the 

ones charged in the indictment. If you find the defendant did those crimes, you 

can consider the evidence on any matter to which it is relevant. But remember that 

the Defendant is on trial here only for the crimes charged in the indictment, not 

the other acts. Do not return a guilty verdict unless the government proves the 

crime charged in the indictment beyond a reasonable doubt.

Finally, even if the district court abused its discretion in admitting the Rule 414 child 

molestation evidence over Kniffley’s Rule 403 objection, and even if the jury instruction did not 

sufficiently mitigate the danger of unfair prejudice to survive Rule 403 balancing, the error was 

clearly harmless. As Kniffley himself acknowledged, this child molestation evidence was not, 

strictly speaking, necessary to a conviction. Moore testified about Kniffley’s act of 

photographing Moore and Kniffley’s counsel declined to cross-examine Moore. Given that 

Kniffley had confessed in 2008 to intentionally possessing these photographs and Moore 

provided unchallenged testimony that Kniffley himself took those photographs, it could not be 

said “with fair assurance that the error materially affected the defendant’s substantial rights—that 

the judgment was substantially swayed by the error.” United States v. Murphy, 241 F.3d 447, 

453 (6th Cir. 2001). 
No. 17-5689, United States v. Kniffley 

-16- 

IV 

For the foregoing reasons, we AFFIRM the district court.