Fivehouse v. U.S. Department of Defense

The timeline

• 29 Aug 2025Derence V. Fivehouse sues under the Administrative Procedure Act over a change to medication covered by the Department of Defense’s TRICARE programme.
• BriefingAssistant United States Attorney Rudy Renfer files a brief for the government containing fabricated quotations and misstatements of case holdings.
• ExplanationThe errors are first attributed to an inadvertent clerical mistake, before AI use is admitted.
• 27 Apr 2026Magistrate Judge Robert T. Numbers II issues an eighteen-page order publicly reprimanding him, and orders it submitted for publication.

What the AI did

“The record establishes, clearly and convincingly, that former Assistant United States Attorney Rudy Renfer knowingly submitted a brief containing fabricated quotations and misstatements of case holdings. These errors arose because Renfer used a generative AI tool to draft the brief but failed to verify the accuracy of its contents.”

The court also flagged that the explanation offered for the errors may itself have been incorrect or misleading, implicating the North Carolina Rules of Professional Conduct on candour toward the tribunal, conduct involving dishonesty or misrepresentation, and conduct prejudicial to the administration of justice.

What the court did, and why

“The court should hold the attorney accountable because he is responsible for the authorities he presents to the court, regardless of [how] they came to appear in the brief.”

• BasisThe court’s inherent authority. “That conduct is an abuse of the judicial process and warrants imposing sanctions.”
• PenaltyPublic reprimand, expressly discounted: “in light of the professional consequences he has already suffered, the Court will limit its sanction to a public reprimand.”
• PublicationThe Clerk was ordered to submit the opinion for publication, and the U.S. Attorney’s Office to mail a copy to Renfer at his current or last known address.

The passage most worth quoting to a sceptical partner is the court’s account of why detection is not a defence:

“The fabricated authority was detected by the opposing party and the Court, but what if it had not been detected? … A judicial decision based on fabricated authority can result in a miscarriage of justice, deny due process to the losing party, and undermine public faith in the courts.”

What it changed

Two contributions. First, it puts a federal prosecutor on this record, which forecloses the argument that AI-citation sanctions are a small-firm or self-represented problem; the court expressly weighed “the position of trust he held” as an aggravating factor. Second, it contains the clearest judicial statement yet that the current remedies are too light:

“Courts should begin meeting this challenge with an eye towards deterring similar conduct. This will, necessarily and unfortunately, involve moving beyond admonitions and reprimands into more punitive sanctions.”

That is a magistrate judge telling every court that reads the published order that the going rate is about to rise.

Sources

• Order, No. 2:25-CV-00041-M, ECF No. 129 (E.D.N.C. PDF, 27 Apr 2026)
• Docket, No. 2:25-cv-00041 (CourtListener)
• Cited within the order: United States v. Shaffer Equipment Co., 11 F.3d 450 (4th Cir. 1993)

Related

• The full sanctions record
• In re Nwaubani, the other 2026 reprimand
• Gamez v. County of Fresno, where candour was immediate and nothing followed
• Every verified AI standing order

Checked 5 August 2026 against the court’s own order. Information, not legal advice.