Background
Jameson D. Vannier was convicted by jury trial of two counts of third degree sexual assault of a child (Class IIIA felony). The victim, C.O., testified that Vannier—the husband of her great-aunt Kerry—sexually assaulted her on multiple occasions between August 2015 and May 2018, when she was between 7 and 12 years old. C.O. disclosed the assaults to her aunt Chelsea in August 2022, leading to a forensic interview and criminal investigation.
The district court had entered a reciprocal discovery order on July 8, 2024, requiring Vannier to disclose any witnesses he intended to call. At trial in March 2025, after the State rested its case, Vannier’s counsel sought to call Kerry as a rebuttal witness to testify that C.O. did not spend the night at the Vanniers’ home when she alleged the first assault occurred. The State objected, noting it received no notice of Kerry as a potential witness until 8 a.m. that morning. The trial court sustained the objection and excluded Kerry’s testimony because Vannier had not disclosed her as a witness pursuant to the discovery order.
Vannier was sentenced to consecutive 24-month terms of incarceration on each count, plus concurrent 18 months of post-release supervision. He appealed, challenging the witness exclusion, the determinate sentence with post-release supervision, and claiming ineffective assistance of counsel.
The Court’s Holding
The Nebraska Court of Appeals affirmed the conviction and sentence in full. On the witness exclusion issue, the court held that the trial court did not abuse its discretion by prohibiting Kerry from testifying. Under Neb. Rev. Stat. § 29-1919, when a party fails to comply with a reciprocal discovery order, the court may prohibit undisclosed witnesses from testifying. The court found no abuse of discretion because C.O.’s testimony was not a surprise—Vannier should have anticipated it—and Kerry’s testimony was not newly discovered.
The court rejected Vannier’s constitutional argument under the Sixth Amendment. While defendants have a right to present a defense, that right is not absolute; it must be weighed against the state’s interest in fair and efficient administration of justice. The court followed State v. Sierra, holding that the defendant’s interest is outweighed by the state’s legitimate concern in protecting itself against eleventh-hour defenses.
On sentencing, the court affirmed the determinate sentences with post-release supervision. Although Count I technically straddled the August 30, 2015 cutoff date in § 29-2204.02(4)(a), the court found that C.O.’s testimony established she was 7 or 8 years old during the first assault. Because C.O. was not born until August 2009, she could not have turned 7 until August 2016—after the statutory cutoff. Therefore, both offenses occurred after August 30, 2015, and the exception allowing indeterminate sentences did not apply.
Key Takeaways
- Defendants who request discovery of the State’s witness list are bound by reciprocal discovery obligations and must disclose their own witnesses, or face exclusion of those witnesses at trial.
- Failure to disclose a witness is sanctionable even when that witness’s existence is apparent from police reports the State provided—the defendant must affirmatively identify witnesses on the required disclosure list.
- The constitutional right to present a defense is not absolute and does not override procedural discovery requirements designed to ensure fair trial administration.
- Courts may exclude witnesses as a discovery sanction without violating the Sixth Amendment when no surprise, newly discovered evidence, or unanticipated testimony is shown.
- In determinate sentencing statutes with temporal cutoffs, courts may rely on victim testimony to determine the actual date range of the offense and avoid triggering exceptions.
Why It Matters
This decision reinforces that discovery sanctions—particularly witness exclusion—are a permissible remedy for non-compliance with reciprocal discovery orders and do not violate a defendant’s constitutional rights, even when the witness could offer exculpatory evidence. The decision is significant for criminal practitioners: listing a witness in police reports or case discovery is not sufficient compliance; the defendant’s counsel must affirmatively identify witnesses in the disclosure required by the reciprocal discovery order. Failure to do so is tactical negligence that cannot be remedied at trial through an offer of proof.
The sentencing analysis also provides guidance on temporal elements in statutory sentencing provisions. The court’s reliance on actual victim testimony rather than pleading dates to determine whether an offense occurred before or after a statutory cutoff may prove important in cases involving multiple offenses with overlapping time periods, particularly in child sexual abuse cases where precise dating is often difficult.