653 F. App'x 622
10th Cir.2016Background
- Defendant Donovan Mercer was charged with three counts of accessing/attempting to access child pornography found on family computer; he asserted an alibi/that someone else downloaded the material.
- The government moved under Fed. R. Evid. 414 to admit evidence that Mercer had previously molested three children (relatives of his ex‑wife) and that his then‑wife found a floppy disk with child pornography in 2000.
- At a pretrial hearing three alleged victims testified to molestation in the 1990s; defense presented an expert who testified there is no proven causal link between molestation and viewing child pornography.
- The district court admitted the Rule 414 evidence after making written findings and gave limiting instructions at witnesses’ testimony and in final charge; Mercer was convicted on all counts.
- On appeal Mercer argued only that the district court abused its discretion under Fed. R. Evid. 403 in concluding the probative value of the prior‑acts evidence was not substantially outweighed by unfair prejudice.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Admissibility of prior molestation evidence under Rule 414/403 | Government: Prior molestations show propensity, intent, knowledge, and absence of mistake; probative value outweighs prejudice | Mercer: Prior acts were stale, uncharged, different in kind, highly prejudicial; limiting instruction insufficient | Court affirmed: district court did not abuse discretion in admitting the evidence after applying the Enjady/403 balancing test |
| Sufficiency of proof that prior acts occurred (Enjady factor 1) | Gov: testimony proved prior acts by preponderance | Mercer: challenges credibility and investigative decisions | Held: district court reasonably found victims credible; no reweighing on appeal |
| Probative value given similarity and staleness (Enjady factor 2) | Gov: similarity (prepubescent victims, similar acts) and relevance to lack of mistake support probative value | Mercer: evidence too remote and lacks proof linking molestation to viewing pornography | Held: staleness not dispositive; similarity and Rule 414 purpose make evidence probative |
| Risk of unfair prejudice and limiting measures (Enjady prejudice factors) | Gov: limiting instructions and brief testimony reduce risk; juries presumed to follow instructions | Mercer: evidence inherently and overwhelmingly prejudicial; presentation order magnified prejudice | Held: court’s limiting instructions and case management were sufficient; district court’s balancing not an abuse of discretion |
Key Cases Cited
- Benally v. United States, 500 F.3d 1085 (10th Cir. 2007) (standard for Rule 414 threshold and appellate abuse‑of‑discretion review)
- Enjady v. United States, 134 F.3d 1427 (10th Cir. 1998) (four‑factor framework and prejudice considerations for balancing Rule 403 with propensity evidence)
- Meacham v. United States, 115 F.3d 1488 (10th Cir. 1997) (staleness not per se bar to prior sexual‑offense evidence; similarity can overcome remoteness)
- Guardia v. United States, 135 F.3d 1326 (10th Cir. 1998) (discussion of risks of prejudice from prior sexual‑offense evidence)
- Sturm v. United States, 673 F.3d 1274 (10th Cir. 2012) (deference to district court’s Rule 403 balancing and trial management)
- McHorse v. United States, 179 F.3d 889 (10th Cir. 1999) (Rule 414 admissibility principles and jury instruction presumption)