Ybanez v. People, 2018 CO 16

Background

In 1998 Nathan Ybanez (then 17) killed his mother; he was convicted as an adult of first-degree murder in 1999 and sentenced to life without parole. He did not appeal at the time.
In 2007 Ybanez filed a Crim. P. 35(c) postconviction motion claiming ineffective assistance of counsel and challenging his sentence; the motion was partially granted in 2011 only to restore his right to appeal.
Trial evidence included eyewitness testimony by two friends who helped clean up and dispose of the body (one testified for the prosecution after a plea), forensic evidence, and an unadmitted jailhouse confession; Ybanez did not testify.
Postconviction claims centered on: (1) counsel’s purported conflict of interest stemming from the father’s role in retaining counsel and alleged family abuse; (2) counsel’s failure to investigate or present an abuse-based psychological defense (catathymic crisis) that might negate deliberation; and (3) the trial court’s failure to appoint a guardian ad litem sua sponte for a juvenile tried as an adult.
The postconviction court credited trial counsel’s strategic explanations, found the psychological theory unreliable, and held counsel ineffective only for failing to file an appeal; the court of appeals affirmed guilt-related rulings but remanded for resentencing in light of Miller and Tate. The Colorado Supreme Court granted certiorari.

Issues

Issue	Ybanez's Argument	People’s Argument	Held
Whether counsel labored under an actual conflict that deprived Ybanez of effective assistance	Counsel had a non-waivable conflict (engagement by father) that prevented pursuing an abuse-based defense	Any conflict did not adversely affect counsel’s performance; counsel made reasonable strategic choices	No adverse effect shown; defendant failed West/Cuyler standards; no relief for actual conflict
Whether counsel was constitutionally ineffective for failing to investigate/present an abuse-based "catathymic crisis" defense	Failure to investigate/present this plausible, mitigating defense was objectively unreasonable and prejudicial under Strickland	Defense theory was implausible, unsupported, risky, and counsel reasonably declined it; overwhelming evidence of deliberation	Performance was not deficient and/or not prejudicial; no reasonable probability of different outcome
Whether trial court erred in not sua sponte appointing a guardian ad litem for a juvenile tried as an adult	Court should have appointed a guardian ad litem sua sponte; failure is structural/plain error	No constitutional right to a guardian ad litem; statutory appointment is discretionary and limited to specific triggers which were absent	No constitutional or statutory error; no plain or structural error in not appointing
Nature of resentencing relief required after Miller/Tate for juvenile-offender life terms	Entitled to an individualized determination regarding length of life term beyond parole possibility	Remedy is limited; statutory scheme allows life with parole eligibility after 40 years for juveniles tried as adults	Defendant only entitled to individualized determination whether LWOP or life with parole after 40 years; remand for resentencing consistent with rule and statute

Key Cases Cited

United States v. Cronic, 466 U.S. 648 (presumption of prejudice in limited Sixth Amendment contexts)
Strickland v. Washington, 466 U.S. 668 (two‑prong standard for ineffective assistance—performance and prejudice)
Mickens v. Taylor, 535 U.S. 162 (defining "actual conflict" as one that adversely affects counsel’s performance)
Holloway v. Arkansas, 435 U.S. 475 (presumed prejudice when trial court refuses to inquire about joint-representation conflicts)
Cuyler v. Sullivan, 446 U.S. 335 (standard for proving prejudice from joint-representation conflicts when no inquiry occurred at trial)
Miller v. Alabama, 567 U.S. 460 (Eighth Amendment prohibits mandatory life-without-parole for juveniles)
West v. People, 341 P.3d 520 (Colo. 2015) (Colorado’s three-part test for showing an adverse effect from an actual conflict)
People v. Tate, 352 P.3d 959 (Colo. 2015) (interpretation of Miller in Colorado and remedy framework for juvenile LWOP cases)