State v. Ross, 349 P.3d 620

Background

Defendant convicted of multiple sexual offenses involving three victims: RW (step‑granddaughter, alleged unlawful sexual penetration, Count 4), E (adult cousin, alleged first‑degree sodomy, Count 1), and RB (adult stepdaughter, alleged attempted first‑degree sodomy, Count 5).
RW was 10 at the time; Child Protective Services investigator Valentina Muggia interviewed RW and testified at trial about RW’s statements and demeanor. On direct, Muggia stated she believed RW had been molested; defense did not object at trial and extensively cross‑examined Muggia, eliciting more vouching‑style opinions.
E (25) has cerebral palsy and uses a wheelchair; she testified that defendant forcibly put his penis in her mouth after she refused oral sex. The defense claimed consent and argued repeated consensual encounters.
RB alleged a December 2011 sexual assault that formed the basis for the attempted sodomy charge; trial instructions did not specify the culpable mental state for the forcible compulsion element on Counts 1 or 5.
Defendant raised three plain‑error assignments on appeal: (1) admission of Muggia’s vouching testimony (Count 4); (2) failure to instruct jury on requisite mental state for forcible compulsion for Count 1; and (3) same as to Count 5 (attempt).
The court analyzed the claims under the plain‑error framework (Brown) and the discretionary relief test (Ailes), and ultimately affirmed all convictions.

Issues

Issue	Plaintiff's Argument (State)	Defendant's Argument	Held
Admission of Muggia’s vouching statement that she “believed” RW was molested (Count 4)	Admission was not plain error warranting reversal; cross‑examination showed tactical choices and the statement was harmless in context	Muggia’s vouching violated Middleton/Lupoli rule prohibiting witness opinion on another’s credibility; trial court should have excluded/struck it and appellate court should correct under Ailes	Statement was improper vouching, but any error was not corrected as plain error; court declined Ailes relief because defense elicited extensive similar testimony on cross‑examination and error was harmless; conviction affirmed
Failure to instruct jury that state must prove defendant’s culpable mental state with respect to forcible compulsion (Count 1, completed offense)	No plain error or, if error, harmless given evidence; state argued circumstances differ from Gray/Nelson	Nelson/Gray require instruction that state prove culpable mental state for forcible compulsion when crime charged with a mental state (e.g., knowingly)	Court concluded failing to give the Nelson‑style instruction was plain error for Count 1 but declined Ailes relief because the error was harmless in context (E’s account left no plausible doubt defendant knew he was using forcible compulsion); conviction affirmed
Failure to give Nelson‑style instruction on forcible compulsion for attempted sodomy (Count 5, attempt)	Extending Nelson to attempts is unsettled; error not plain because correctness is reasonably in dispute	Nelson should apply to attempt charges such that jury must be instructed on culpable mental state for forcible compulsion element	Court held extension of Nelson to attempted crimes is reasonably disputable; therefore not plain error and no relief granted; conviction affirmed

Key Cases Cited

State v. Brown, 310 Or. 347 (plain‑error standard for unpreserved issues)
Ailes v. Portland Meadows, Inc., 312 Or. 376 (discretion whether to correct plain error)
State v. Middleton, 294 Or. 427 (witness may not opine on another witness’s credibility)
State v. Lupoli, 348 Or. 346 (reaffirming prohibition on vouching testimony)
State v. Nelson, 241 Or. App. 681 (instructional requirement re: culpable mental state for forcible compulsion)
State v. Gray, 261 Or. App. 121 (applied Nelson; failure to instruct not harmless where mental state was in dispute)
State v. Digesti, 267 Or. App. 516 (declined Ailes relief where Nelson error was harmless)
State v. Matheson, 220 Or. App. 397 (harmlessness analysis when assuming admission error)