This case arose from a physical altercation in the Dixie National Forest between defendant Kristopher Boger and his brother, and Robert Miller, a United States Forest Service road engineer. The conflict began when Miller approached the brothers regarding necessary road repairs while they were hauling timber. The situation escalated into a physical confrontation, leading to charges against the brothers for assaulting a federal employee acting within the scope of their employment. During the trial, Boger attempted to introduce evidence suggesting that Miller had breached a contract with their employer, arguing this context was relevant to whether Miller was acting within his official duties. The government moved in limine to exclude this evidence. Additionally, Boger sought to admit a Forest Service inspection report to support his theory regarding the scope of Miller's duties. The district court granted the government's motion, excluding the contract evidence as irrelevant under Federal Rule of Evidence 401. The court also excluded the inspection report, ruling it inadmissible under Rule 403 due to its potential to confuse the jury and mislead them on the issues at hand. A jury convicted Boger of simple assault, a lesser included offense, while acquitting his brother.
The Tenth Circuit reviewed the district court's evidentiary rulings for an abuse of discretion, a standard that requires deference to the trial court's familiarity with the case details. The appellate panel emphasized that a decision will only be disturbed if there is a definite and firm conviction that the trial court made a clear error of judgment. Regarding the contract breach evidence, the court reasoned that whether Miller breached a contract with Boger's employer was not relevant to the criminal charges or any fact in dispute at trial. Consequently, the exclusion of this evidence under Rule 401 was proper. The court further addressed the exclusion of the Forest Service inspection report. While the report might have had some relevance, the district court acted within its discretion under Rule 403 to exclude it. The report was not written by Miller or any other witness who testified at trial. The appellate court found that the report had the potential to confuse the issues and mislead the jury, and Boger failed to meet his burden of showing that the district court exceeded the bounds of permissible choice in excluding it.
The decision affirms the conviction, meaning Boger remains subject to the sentence imposed by the district court. The ruling reinforces the strict application of Federal Rules of Evidence 401 and 403 in federal assault cases involving government employees. It clarifies that evidence of collateral disputes, such as contract breaches between an employee and a third party, is generally irrelevant to the scope of official duties in a criminal assault context. Furthermore, the decision highlights that documentary evidence not authored by trial witnesses may be excluded if it risks confusing the jury, even if it touches on the scope of employment. No remand instructions were issued as the case was affirmed in full.
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