State v. Walker, 358 P.3d 1120

Background

Walker was charged with aggravated assault after punching his girlfriend’s cousin (Cousin), rendering him unconscious; Walker claims self-defense.
Walker sought to admit evidence of Cousin’s prior violent acts (convictions, allegations, and witness testimony) to show imminence and reasonableness of his self-defense belief.
The district court admitted some convictions (including under Rule 609) but limited other prior-acts evidence to certified convictions within the last ten years, construing Utah Code § 76-2-402(5) narrowly.
Walker appealed interlocutorily, arguing § 76-2-402(5) either creates a substantive right to present such evidence or overrides/amends the Utah Rules of Evidence.
The Court of Appeals reviewed the statutory interpretation of § 76-2-402(5) and limited its review to that issue, vacating the district court’s ruling and remanding for further evidentiary analysis under the Rules of Evidence.

Issues

Issue	Plaintiff's Argument	Defendant's Argument	Held
Whether Utah Code § 76-2-402(5) creates a substantive right or otherwise requires admission of an alleged victim’s prior violent acts	The State (plaintiff) argued for application of ordinary evidentiary limits (i.e., admissibility subject to Rules of Evidence).	Walker argued § 76-2-402(5) either substantively defines reasonableness/imminence or functionally amends the Rules of Evidence to require admission of the enumerated factors.	Court held § 76-2-402(5) is non‑substantive guidance: it lists factors the trier of fact may consider but does not override or amend the Utah Rules of Evidence.
Whether § 76-2-402(5) implicitly amends the Utah Rules of Evidence	State: statute does not amend evidence rules; admissibility still governed by Rules.	Walker: statute’s “may consider” language requires admission, effectively changing evidentiary law.	Court held the statute did not amend the Rules; admissibility requires compliance with the Rules of Evidence.
Whether the district court’s limitation to recent certified convictions was appropriate	State supported excluding other prior-acts proof absent satisfying evidentiary rules.	Walker contended broader prior-acts evidence should be admitted under § 76-2-402(5).	Court vacated the district court’s ruling because it applied § 76-2-402(5) as controlling over evidentiary rules and remanded for full evidentiary analysis under the Rules.
Whether this Court should decide admissibility under the Utah Rules of Evidence now	State: leave evidentiary analysis to district court.	Walker sought immediate review of admissibility under evidence rules (and alternative doctrines like doctrine of chances).	Court declined to rule on evidentiary admissibility at interlocutory stage; Walker may renew arguments on remand.

Key Cases Cited

Ryan v. Gold Cross Servs., Inc., 903 P.2d 423 (Utah 1995) (statute held to effect substantive change to negligence law)
State v. Larsen, 850 P.2d 1264 (Utah 1993) (legislature must follow specific procedure to amend court rules)
State v. Verde, 296 P.3d 673 (Utah 2012) (discusses doctrine of chances and admissibility of prior acts)