349 P.3d 1213
Idaho Ct. App.2015Background
- Victoria Morin was charged with driving under the influence of drugs after observers and police noted slurred speech, abnormal responses, failure of field sobriety tests, dilated pupils, eye tremors, a greenish coating on her tongue, and smell of marijuana.
- An Idaho State Police DRE officer concluded Morin was impaired by marijuana (and not alcohol) and obtained a blood sample; breath test excluded alcohol.
- State lab detected venlafaxine, an amphetamine, and carboxy-THC (an inactive THC metabolite); the lab did not detect active THC due to equipment sensitivity limits.
- The State disclosed only a generic summary of its toxicology expert (Dr. Dawson) before trial; Morin moved to compel a more detailed expert disclosure under I.C.R. 16(b)(7), and moved to exclude carboxy-THC evidence; both motions were denied by the magistrate.
- At trial Dr. Dawson opined Morin was impaired and unsafe to drive and tied observed signs to marijuana and other drugs; Morin was convicted by a jury. The district court affirmed the conviction, found the discovery disclosure was legally deficient but harmless, and held carboxy-THC evidence admissible.
Issues
| Issue | State's Argument | Morin's Argument | Held |
|---|---|---|---|
| Adequacy of expert disclosure under I.C.R. 16(b)(7) | Generic topic summary sufficed; full details not required pretrial | Disclosure was insufficient—required opinions, facts/data, and qualifications | Discovery response was legally deficient; magistrate erred, but error found harmless |
| Denial of due process based on inadequate disclosure | Any deficiency did not prejudice Morin; she had opportunity to cross-examine | Lack of disclosure deprived Morin of meaningful opportunity to prepare and present defense | No due process violation shown because error harmless and did not affect substantial rights |
| Admissibility of carboxy-THC evidence | Carboxy-THC is probative of past marijuana use and, with other evidence of present impairment, is relevant to causation | Carboxy-THC is inactive and irrelevant to intoxication; should be excluded | Admissible: carboxy-THC is relevant when combined with other evidence showing present marijuana impairment |
Key Cases Cited
- State v. Koch, 157 Idaho 89 (Idaho 2014) (addresses sufficiency of expert disclosure under I.C.R. 16(b)(7))
- Reisenauer v. State, Dep’t of Transp., 145 Idaho 948 (Idaho 2008) (carboxy-THC is not an intoxicant for administrative suspension purposes)
- State v. Stark, 157 Idaho 29 (Ct. App. 2013) (carboxy-THC alone insufficient to prove marijuana caused impairment; need connection to present impairment)
- United States v. Beavers, 756 F.3d 1044 (7th Cir. 2014) (topic-only expert disclosures do not satisfy federal rule requiring disclosure of expert opinions)
- United States v. Duvall, 272 F.3d 825 (7th Cir. 2001) (same)
- United States v. White, 492 F.3d 380 (6th Cir. 2007) (same)