State v. Thieszen, 912 N.W.2d 696

Background

In 1987, 14-year-old Sydney L. Thieszen shot and killed his 12-year-old sister. He pleaded guilty to second-degree murder initially, was sentenced to life, later retried and convicted of first-degree murder and sentenced to life plus a consecutive 80–240 months for a firearm conviction.
In 2013 Thieszen moved for postconviction relief under Miller v. Alabama; the district court vacated his life sentence and this Court remanded for resentencing.
At a 2017 mitigation hearing the court received extensive evidence: a history of early childhood abuse and removal from his mother, adoption, adolescent conduct problems (including sexual and voyeuristic acts), and expert psychiatric testimony describing adolescent brain immaturity, impulsivity, trauma effects, and later maturation while incarcerated.
Psychological evaluations at resentencing showed above-average IQ, evidence of remorse, many early misconducts in prison but a sharp decline over time, and low assessed risk for future violence; experts differed in diagnoses and emphasis on mitigating factors.
The district court considered statutory juvenile-specific mitigating factors and resentenced Thieszen to 70 years to life for first-degree murder, consecutive to his existing firearm sentence; Thieszen appealed, alleging several sentencing errors.

Issues

Issue	Thieszen's Argument	State's Argument	Held
Whether letters in the presentence report should have been stricken	Letters anonymous, baseless, intimidating; court should strike them	Court may consider such materials and weigh credibility; it struck unsigned letters and would give others appropriate weight	Court did not abuse discretion; sentencing courts may consider varied sources and weight them appropriately
Whether allowing sister to read a victim impact statement was improper	Sister not a statutory "victim" under §29-119 because parents are surviving relatives; statutory right limited to nearest relatives	Crime victims statute provides baseline rights but does not limit the court’s traditional discretion to hear relevant statements; parents declined to participate	Court did not abuse discretion; permitting sister’s oral statement was acceptable
Whether the 70-years-to-life sentence was excessive	Sentence excessive given age (14), trauma, immaturity, and rehabilitation prospects; comparative case (Jackson) received lesser term	Sentence within statutory limits; court properly considered mitigating and aggravating factors and individualized evidence	No abuse of discretion; court considered required factors and mitigation and imposed a within-limits sentence
Whether the term is a de facto life without parole / disproportionate	70-to-life effectively denies realistic chance of release until midlife and imposes lifelong parole—thus de facto LWOP or disproportionate	Term offers a meaningful and realistic opportunity for release; lengthy term-of-years is not per se LWOP	Not de facto LWOP; Court rejected disproportionate-sentence claim and upheld term-of-years approach

Key Cases Cited

State v. Thieszen, 232 Neb. 952 (appellate decision describing initial plea and sentencing) (background on original proceedings)
State v. Thieszen, 295 Neb. 293 (2016) (postconviction/Miller-related remand for resentencing)
State v. Jackson, 297 Neb. 22 (2017) (comparative resentencing of juvenile offender)
State v. Galindo, 278 Neb. 599 (2009) (sentencing court’s discretion to hear impact statements beyond statutory baseline)
State v. Casares, 291 Neb. 150 (2015) (broad discretion in sources admissible at sentencing)
State v. Russell, 299 Neb. 483 (2018) (standards for reviewing claimed sentencing abuses)