United States v. Walker

United States Court of Appeals for the Eighth Circuit · 2019 · Evidence

917 F.3d 1004 (8th Cir. 2019)

Updated August 22, 2026

EvidenceFed. R. Evid. 412rape shieldconstitutional right to present a defenseConfrontation Clausescope of cross-examinationharmless cumulative evidencejury instructions

Facts

Walker met W.F., who was fourteen, on a social media site for men seeking other people. W.F. had falsely claimed on the site that he was eighteen, but he told Walker that he was fourteen, and the two exchanged sexual messages and pornographic images from June 2013 to February 2014. At trial, Walker argued that he believed W.F. was an adult and that their communications were fantasy role-play. He sought to introduce evidence of W.F.'s sexual communications with other men and website materials that Walker said informed his fantasy conversations.

Issue

Did the district court err by excluding evidence of the victim's sexual communications with other men and fantasy source material, limiting cross-examination, declining to instruct that knowledge of the victim's age is an element of § 2251(a), denying Walker's motion for judgment of acquittal, and imposing a sentence that violated the Eighth Amendment?

Rule

Under Rule 412, evidence of a victim's other sexual behavior is inadmissible unless a stated exception applies; the exception in Rule 412(b)(1)(A) requires specific instances offered to prove that someone other than the defendant was the source of physical evidence, and Rule 412(b)(1)(C) admits evidence only when exclusion would violate constitutional rights. In assessing a constitutional challenge to exclusion, the key inquiry is whether the exclusion was arbitrary or disproportionate to the purposes it was designed to serve. A district court need not instruct that knowledge of the victim's age is an element of § 2251(a), and a sentence within the statutory range does not violate the Eighth Amendment under this court's precedents.

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One of 10 multiple-choice questions for this case. Pick an answer to see why.

In a federal prosecution in Omaha under a child-exploitation statute, Daniel Reeves claims the teenager who sent him explicit photos often traded sexual messages with numerous adult strangers online. Daniel offers testimony that the teenager "did this with everybody" during the same months as their chats, but he cannot identify any particular exchange showing another adult asked for the charged images.

Is the evidence most likely admissible under Rule 412's physical-evidence exception?

Explanation. Under the majority opinion, Rule 412(b)(1)(A) permits only evidence of specific instances of the victim's sexual behavior offered to prove that someone other than the defendant was the source of semen, injury, or other physical evidence. General proof that the victim sexted many others is sexual-history evidence, not a specific instance tied to the source of the charged images, so exclusion is proper.