Background
David Zobel was indicted on charges of distributing child pornography and attempting to sexually exploit a minor based on a series of online messages exchanged in December 2020 between an undercover FBI agent and someone using the username “slothllama99.” During those messages, the individual shared links to and images of child pornography and expressed interest in sexual abuse. The individual identified himself as a 40-year-old man and “a middle aged sex offender with lots of good memories,” claiming to have sexually abused his 12-year-old daughter and her friend, resulting in a 2011 conviction under 18 U.S.C. § 2422(b) for coercion and enticement of a minor. An FBI investigator matched photographs of court documents that the individual shared in the chat to Zobel’s records, and other evidence confirmed Zobel lived at an address corresponding to the IP address used for the KIK account.
Before trial, the government moved in limine to introduce evidence of Zobel’s 2011 conviction under Federal Rules of Evidence 404(b) and 414. Rule 414 permits the admission in child molestation cases of evidence that a defendant committed prior acts of child molestation for any relevant purpose, including propensity. The district court initially excluded this evidence in September 2023, finding that under Rule 403, the risk of unfair prejudice substantially outweighed the probative value because of the danger that a jury would rely on a propensity inference. The government renewed its motion in February and March 2025, emphasizing that the defense had signaled it would contest the defendant’s identity. The district court again excluded all evidence relating to the prior conviction.
The Court’s Holding
The D.C. Circuit held that it possessed jurisdiction to hear the government’s interlocutory appeal under 18 U.S.C. § 3731. Although the district court’s September 2023 ruling excluded the government’s initial proposed summary of the plea colloquy, the court had stated that ruling would be “subject to reconsideration” if identity became an issue at trial. Once the defense confirmed it would contest identity and the district court reaffirmed exclusion in February and March 2025, the government timely appealed within thirty days.
On the merits, the court clarified the legal relationship between Federal Rules of Evidence 403 and 414. Rule 414 explicitly creates an exception to Rule 404(b)’s general prohibition on using prior bad acts to show propensity to commit further acts of the same type. In child molestation cases, Rule 414 authorizes district courts to “admit evidence that the defendant committed any other child molestation” for consideration “on any matter to which it is relevant”—without exception for propensity use. Congress enacted Rule 414 based on a determination that a defendant’s prior history of child molestation is particularly probative of a disposition to commit such crimes in the future.
While Rule 414 evidence remains subject to Rule 403 balancing for unfair prejudice, the court held that district courts cannot treat the risk of a propensity inference as categorically “unfair” under Rule 403. The district court erred by apparently viewing any propensity inference from evidence of child molestation as inherently unfairly prejudicial. This misread the legal framework created by Rule 414. The court vacated the district court’s exclusion and remanded for reassessment of admissibility under the correct legal standard, requiring the district court to weigh probative value against unfair prejudice without categorically excluding propensity inferences.
Key Takeaways
- Rule 414 creates an explicit exception to Rule 404(b), permitting propensity evidence in child molestation prosecutions contrary to the general common-law rule against character evidence.
- A propensity inference arising from prior child molestation evidence cannot be deemed categorically “unfair” under Rule 403; courts must apply case-specific Rule 403 balancing.
- Rule 414 evidence remains subject to Rule 403, but the exclusion cannot rest on the mere fact that it invites a propensity inference—that is precisely what Rule 414 permits.
- The government’s appeal was timely because the district court’s initial September 2023 ruling was expressly conditional and later made final only in February-March 2025.
Why It Matters
This decision resolves a significant interpretive question about how district courts should apply Rule 414 in conjunction with Rule 403. Prior to this ruling, some courts appeared uncertain whether evidence of prior child molestation could be excluded under Rule 403 primarily because it invites a propensity inference. The D.C. Circuit’s holding makes clear that Congress, in enacting Rule 414, made a categorical judgment that propensity evidence in child molestation cases warrants a different evidentiary treatment than in other criminal contexts. District courts cannot circumvent this judgment by treating propensity inferences as per se unfairly prejudicial.
The decision will significantly affect prosecutors’ ability to present evidence of a defendant’s prior child molestation history in future cases and will require district courts to engage in a more nuanced Rule 403 analysis that distinguishes between the categorical exception Congress created and case-specific considerations of prejudice, probativeness, and trial management. The ruling also clarifies appellate jurisdiction over in limine rulings in cases where district court positions are stated conditionally or evolve over the course of pretrial proceedings.