United States v. Morgan
675 F. App'x 53
2d Cir.2017Background
- Defendant Johnny Morgan convicted after jury trial of illegal firearm possession under 18 U.S.C. § 922(g)(1); sentenced to 84 months’ imprisonment and 3 years supervised release.
- Police recovered a .40 caliber pistol near Morgan’s arrest; OCME LCN (Low Copy Number) DNA testing showed DNA consistent with Morgan’s profile on the pistol.
- Two officers testified they were responding to a 911 call reporting a “man with a gun” in the area where Morgan was arrested.
- Morgan moved to exclude (1) OCME’s LCN reports and expert testimony as unreliable and (2) testimony about the 911 call as unduly prejudicial under Rule 403.
- District court held a Daubert-style hearing, admitted the LCN evidence after finding OCME had performed validation studies and obtained peer review and agency approval, and admitted testimony about the 911 call with a limiting instruction to the jury.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Admissibility of LCN DNA evidence under Rule 702/Daubert | Gov’t: OCME validation, peer-reviewed publication, and approval support reliability | Morgan: LCN inherently unreliable; OCME methods insufficiently validated; higher error risk; not used/accepted broadly (e.g., FBI/CODIS) | Court: No abuse of discretion; LCN evidence admitted — reliability weaker than standard DNA but admissible here |
| Scope/application of Daubert factors | Gov’t: OCME studies, peer review, validation show reliable foundations | Morgan: validation limits, lack of broad acceptance, and procedural weaknesses undermine reliability | Court: District court properly considered Daubert factors and did not commit manifest error |
| Admission of 911-call testimony (Rule 403) | Gov’t: testimony explains officers’ reason for responding; probative of why officers were on scene | Morgan: testimony is unduly prejudicial and invites impermissible hearsay inference that a gun was present | Court: Admission proper with limiting instruction; jury presumed to follow instruction; no abuse of discretion |
| Harmlessness / Cumulative error argument | Gov’t: any errors would be harmless given evidence | Morgan: evidentiary errors require vacatur | Held: Remaining arguments meritless; conviction affirmed |
Key Cases Cited
- Daubert v. Merrell Dow Pharm., 509 U.S. 579 (1993) (trial judge as gatekeeper; factors for admissibility of expert testimony)
- Amorgianos v. Nat’l R.R. Passenger Corp., 303 F.3d 256 (2d Cir. 2002) (expert analysis must be reliable at every step)
- United States v. Litvak, 808 F.3d 160 (2d Cir. 2015) (standard of review for admitting expert testimony)
- United States v. Rea, 958 F.2d 1206 (2d Cir. 1992) (abuse of discretion review for evidentiary rulings)
- United States v. Williams, 506 F.3d 151 (2d Cir. 2007) (proponent bears burden to show admissibility under Rule 702)
- United States v. Becker, 502 F.3d 122 (2d Cir. 2007) (presumption that juries follow limiting instructions)