United States v. Mendonsa — Sentencing enhancement may use abuse outside the conviction offense

Case
United States v. Mendonsa
Court
Ninth Circuit Court of Appeals
Judge
Sidney R. Thomas (Bill Clinton, 1996); Eric D. Miller (Donald Trump, 2019); Stanley Blumenfeld, Jr. (appointment info not available)
Date Decided
2026-09-16
Docket No.
25-1517
Status
Reported / Citable
Topics
federal sentencing, Guidelines commentary, pattern of sexual abuse, hearsay
Source
Mirrored from lexcalifornia.com

Background

Louis Mendonsa was sentenced for possessing and distributing child pornography. The district court imposed the Sentencing Guidelines’ five-level enhancement for a pattern of sexual abuse or exploitation based partly on conduct outside the offenses of conviction and on records from earlier state proceedings.

Mendonsa argued that the guideline itself did not authorize consideration of unrelated conduct, that commentary expanding the provision did not deserve deference after recent Supreme Court decisions, and that the supporting police reports and state-court materials were unreliable hearsay.

The Court’s Holding

The Ninth Circuit affirmed. It found the pattern-enhancement text genuinely ambiguous about whether qualifying conduct must be part of the conviction offense. The Sentencing Commission’s commentary reasonably resolves that ambiguity by allowing consideration of separate conduct, and the interpretation satisfied the requirements for deference.

The categorical approach used to compare statutory elements did not control this fact-based enhancement. The district court also acted within its discretion in relying on the state materials: sentencing courts may consider hearsay with sufficient indicia of reliability, and Mendonsa’s objections did not show the documents were materially unreliable.

Key Takeaways

  • The pattern enhancement under U.S.S.G. § 2G2.2(b)(5) can reach qualifying conduct unrelated to the offense of conviction.
  • Guidelines commentary still receives deference when the guideline is genuinely ambiguous and the commentary is reasonable and authoritative.
  • The categorical approach does not apply to this conduct-focused sentencing inquiry.
  • Reliable hearsay may be considered at sentencing even when the defendant cannot cross-examine its original source.

Why It Matters

Federal criminal practitioners in California should investigate historic allegations and records early, because conduct never charged in the current case may significantly raise the advisory range. Challenges should focus on concrete reliability defects and the evidentiary link to qualifying conduct.

The opinion also provides a current Ninth Circuit roadmap for analyzing Sentencing Guidelines commentary after the Supreme Court narrowed automatic agency deference.

At sentencing, the government still must prove the factual basis for an enhancement under the applicable standard, and the defendant can contest accuracy, relevance, and reliability. The ruling does not make every allegation admissible or decisive. A focused objection should identify contradictions, missing context, or reasons the source cannot reliably establish the conduct. Counsel should also preserve textual objections to commentary with a full ambiguity analysis. The court’s deference depended on its conclusion that this particular guideline was genuinely ambiguous and that the Commission’s reading fit the text, structure, and purpose.

The procedural posture matters when using this opinion. A published Ninth Circuit decision supplies binding circuit law unless later rehearing or Supreme Court review changes it; an unpublished memorandum is generally nonprecedential but still illustrates how the panel evaluated the record. Counsel should separate the rule of law from facts that merely explain the outcome, confirm whether an issue was preserved, and check the mandate and subsequent history before relying on the result. Transactional and compliance teams can use the decision prospectively by documenting the facts that the court treated as decisive. Litigators should build that documentation into declarations, discovery, and the statement of undisputed facts rather than waiting until appeal. Where the panel remanded, the prevailing party still has work to do and should not describe the opinion as a final merits victory. Where it affirmed, lawyers should identify whether the holding rests on statutory interpretation, contract language, evidentiary failure, or harmless error, because that distinction determines how readily the analysis transfers to another dispute.

Read the full opinion (PDF) · Court docket

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