440 F. App'x 647
10th Cir.2011Background
- Moncayo was convicted on three counts: drug distribution, using a firearm in furtherance of a drug trafficking crime, and possessing a firearm as a felon.
- The government introduced prior 2007 cocaine-trafficking evidence and a 2008 gun-related item to show intent and knowledge, despite objections.
- Police executed a search at 905 Delta Street and found substantial quantities of cocaine, firearms, and documents bearing Moncayo’s name at that address.
- Moncayo and others testified that he resided at 905 Beta Street, not 905 Delta, creating a central residence-identity dispute at trial.
- The district court allowed the 404(b) evidence over objections and issued a broad limiting instruction after the testimony.
- The panel ultimately reversed and remanded for a new trial, finding the 404(b) evidence improperly admitted and not harmless.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Whether 404(b) evidence of the 2007 incident was admissible | Government contends evidence shows intent to distribute | Moncayo argues insufficient similarity and prejudicial effect | Abuse of discretion; not harmless error; remand |
| Whether the limiting instruction adequately guided the jury on 404(b) use | Limiting instruction suffices to confine purposes | Instruction was too broad and ambiguous | Not harmless; instruction inadequate; remand |
Key Cases Cited
- Huddleston v. United States, 485 U.S. 681 (Supreme Court, 1988) (four-part Huddleston test for 404(b) evidence)
- United States v. Wilson, 107 F.3d 774 (10th Cir. 1997) (explicit four-factor framework for 404(b) analysis; harmless error standard)
- United States v. Zamora, 222 F.3d 756 (10th Cir. 2000) (similarity and proximity required for 404(b) relevance)
- United States v. Mares, 441 F.3d 1152 (10th Cir. 2006) (relevance of 404(b) evidence to non-propensity purposes)
- United States v. Shepherd, 739 F.2d 510 (10th Cir. 1984) (Rule 404(b) admissibility standards; non-propensity purposes)
- United States v. Davis, 636 F.3d 1281 (10th Cir. 2011) (limit on 404(b) and balancing of probative value vs prejudice)
- United States v. Caldwell, 589 F.3d 1323 (10th Cir. 2009) (harmless error review for nonconstitutional errors)
- United States v. Lazcano-Villalobos, 175 F.3d 838 (10th Cir. 1999) (courts may perform de novo balancing when no explicit 403 findings)
- United States v. Rodriguez, 192 F.3d 946 (10th Cir. 1999) (prejudicial impact of prior-act evidence on jury weighing)
- United States v. Hogue, 827 F.2d 660 (10th Cir. 1987) (relevance and admissibility related to prior acts)