Does Utah impose strict liability for sexual activity with minors aged 14-15? State v. Martinez Explained

In State v. Martinez, the Utah Court of Appeals addressed whether Utah Code Ann. § 76-5-401, which criminalizes unlawful sexual activity with a minor, imposes strict liability regarding the victim’s age. The case arose when a 19-year-old defendant had sexual intercourse with a 15-year-old girl and sought to introduce evidence that he was reasonably mistaken about her age.

Background and Facts

The defendant was charged with rape and, alternatively, with unlawful sexual activity with a minor under § 76-5-401. He filed a motion in limine arguing that the statute was not a strict liability crime and requesting permission to present evidence of his reasonable mistake regarding the victim’s age. The trial court denied the motion, ruling that unlawful sexual activity with a minor is a strict liability offense. Defendant subsequently entered a conditional guilty plea and appealed the trial court’s ruling.

Key Legal Issues

The court addressed two primary issues: first, whether § 76-5-401 imposes strict liability for the element of the victim’s age; and second, whether eliminating the culpable mental state requirement for the victim’s age violates federal due process rights. The resolution turned on interpreting Utah Code Ann. § 76-2-304.5(2), which explicitly states that mistake regarding the victim’s age is not a defense to unlawful sexual activity with a minor.

Court’s Analysis and Holding

The court concluded that § 76-5-401 imposes strict liability regarding the victim’s age. The court emphasized that § 76-2-304.5(2) explicitly precludes the defense of mistake regarding the victim’s age, reflecting clear legislative intent to make the defendant’s mental state regarding age irrelevant. The court rejected defendant’s argument that requiring proof of mens rea differs from prohibiting an affirmative defense, noting that the burden of proof is identical in both scenarios.

On the constitutional issue, the court held that strict liability does not violate due process. Following United States v. Ransom, the court noted that legislatures have authority to eliminate knowledge requirements from criminal statutes, and that statutory rape has historically not required mens rea regarding the victim’s age.

Practice Implications

This decision clarifies that Utah’s statutory scheme creates different levels of protection for minors based on age. For victims aged 14-15, defendants cannot raise mistake-of-age defenses, while such defenses remain available for victims aged 16-17. Practitioners defending similar cases should focus on challenging other elements rather than the defendant’s knowledge of the victim’s age. The decision also demonstrates the court’s willingness to uphold strict liability statutes when the legislature has clearly indicated such intent through explicit statutory language.