Sentencing guidelines commentary deference is the rule that tells federal judges how much weight to give the U.S. Sentencing Commission's official commentary, the explanatory notes attached to each guideline. Under Stinson v. United States (1993), that commentary is binding unless it is unconstitutional, conflicts with a statute, or plainly misreads the guideline. The Supreme Court is now deciding whether that rule still holds.
If you or someone close to you is facing federal sentencing, this matters for a practical reason. Part of your guideline range may come from words that don't appear in the guideline at all. They may come only from the commentary. On October 13, 2026, the Supreme Court heard argument in Beaird v. United States, No. 25-5343, a case about whether judges have to follow that commentary.
The case in plain terms
Kendrick Jarrell Beaird pleaded guilty to being a felon in possession of a firearm under 18 U.S.C. § 922(g)(1). According to the Cornell LII Supreme Court Bulletin preview, officers found an unloaded Glock 17 with a 17-round magazine in his waistband in 2022. SCOTUSblog's preview by Richard Cooke describes the October 2022 encounter differently: it reports that officers saw Beaird brandishing a firearm at another person in an abandoned fast-food restaurant. SCOTUSblog also reports that he had four prior felony convictions.
The sentencing fight centered on Guideline §2K2.1(a)(3). It raises the base offense level when the offense involved a "semiautomatic firearm capable of accepting a large capacity magazine." The guideline text never says what a "large capacity magazine" is. The commentary does: a magazine that can accept more than 15 rounds. According to the NACDL amicus brief, the Commission adopted that 15-round threshold in 2006.
Cornell LII reports that the presentence report recommended a base offense level of 22 under §2K2.1(a)(3). Applying the commentary's definition moved Beaird's range from 51-63 months to 63-78 months. The judge treated the commentary as binding and imposed 72 months plus three years of supervised release. The U.S. Court of Appeals for the Fifth Circuit affirmed on May 15, 2025 (No. 24-10764), applying Stinson, according to the Supreme Court docket.
Guidelines vs. commentary: what's the difference?
The U.S. Sentencing Commission writes the Federal Sentencing Guidelines. Judges use them to calculate a recommended sentencing range for federal defendants. Alongside the guidelines, the Commission publishes official commentary: application notes, definitions, and explanations.
The two are not created the same way. As Wikipedia's entry on the case notes, the Commission was created in 1984 as an independent agency in the judicial branch, and its commentary does not go through the congressional review that guideline amendments do. That gap is at the center of this case. When a definition lives only in commentary, it can raise a defendant's range without Congress ever having a chance to review it.
Stinson deference, explained
In Stinson v. United States (1993), the Supreme Court held that commentary that interprets or explains a guideline is "authoritative unless it violates the Constitution or a federal statute, or is inconsistent with, or a plainly erroneous reading of, that guideline," as quoted by Bloomberg Law.
In practice, that is a high bar for a defendant to clear. A judge doesn't ask whether the commentary is the best reading of the guideline. The judge asks only whether it is plainly wrong. If it isn't, it controls.
How Kisor changed the picture
In 2019, Kisor v. Wilkie narrowed the deference courts give to agencies' readings of their own regulations. Under Kisor, a court must first use the traditional tools of legal interpretation and conclude that a regulation is "genuinely ambiguous" before deferring to the agency's reading (Cornell LII; USSC Amendment 827). Reason's Damon Root has written about the disagreement between Justices Kagan and Gorsuch in Kisor.
After Kisor, the federal appeals courts split over whether its stricter test also applies to sentencing commentary. According to an Arent Fox Schiff alert from May 4, 2026:
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Five circuits (3rd, 6th, D.C., 9th, 11th) apply Kisor's stricter framework to commentary.
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Seven circuits (1st, 2nd, 4th, 5th, 7th, 8th, 10th) keep Stinson's broad deference.
Beaird's case came from the Fifth Circuit, which is in the broad-deference group. As a result, the same commentary-based enhancement could be treated differently depending on where a defendant is sentenced.
The question the Court agreed to decide
Beaird's petition was filed August 11, 2025. The government filed its brief in opposition on January 9, 2026. The Court granted review on April 20, 2026, limited to one question, quoted by Cornell LII: "Whether Stinson v. United States still correctly states the rule for deference that courts must give the Commentary of the Federal Sentencing Guidelines."
Counsel of record, per the Supreme Court docket: Kevin Joel Page, Assistant Federal Public Defender in Dallas, for Beaird; Solicitor General D. John Sauer for the United States; and Anthony J. Dick of Jones Day in Washington, D.C., appointed by the Court to defend the judgment below.
Three positions at the lectern
Beaird: no deference
Beaird argues that the Sentencing Reform Act gives interpretive authority to courts, not the Commission. On his view, courts should give the commentary no deference, and the rule of lenity should resolve any real ambiguity in the defendant's favor (SCOTUSblog; Cornell LII). NACDL's brief supporting Beaird sorts commentary into three categories:
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Operational commentary, which would be unaffected.
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Illustrative or definitional commentary, which would carry persuasive weight when the guideline text is ambiguous.
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Additive commentary, which impermissibly supplies new rules or thresholds.
The government: Kisor applies, but deference often survives
The United States agrees that Kisor's limits apply. But it argues the commentary "will frequently satisfy those limits and still warrant deference" because of the Commission's expertise and process. The government supports sending the case back to the lower courts because they ignored Kisor's limits (Cornell LII; SCOTUSblog).
Court-appointed amicus: keep Stinson
Dick argues that Congress expressly authorized the Commission to interpret its own guidelines, so Kisor's limits don't apply and Stinson stands. SCOTUSblog reports that the amicus also suggests Kisor itself may have gone too far and stresses that the guidelines are advisory.
How the argument went
Bloomberg Law's Jordan Fischer reported that the Court "appeared wary" of reducing deference. According to that report:
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Justice Sotomayor told Beaird's attorney: "You're creating a sea of confusion for lower court judges to fill in the blanks."
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Justice Gorsuch, who seemed sympathetic to Beaird, asked about the Commission bypassing congressional review: "What kind of incentive structure would that create?"
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Justice Jackson said the guidelines and commentary are "inextricably linked." Bloomberg notes she was vice chair of the Sentencing Commission from 2010 to 2014.
Law360's Phillip Bantz reported that the justices worried ending deference would "open the floodgates" for thousands of defendants seeking reconsideration. Bloomberg Law reported that a ruling for Beaird "could implicate the sentences of tens of thousands of federal defendants and allow judges more flexibility in the future in calculating sentencing ranges."
Bearing Arms' Cam Edwards reported that Gorsuch seemed the most open to Beaird's position, while Chief Justice Roberts and Justice Kavanaugh pressed Beaird's lawyer on why Stinson had to be discarded.
Questions at oral argument don't decide a case. The Court has not ruled.
What it could mean for pending federal cases
If Beaird wins, enhancements that rest on commentary definitions rather than guideline text could be open to new challenges. The Arent Fox Schiff alert gives direct advice: "Defense counsel should preserve challenges to commentary-based enhancements, especially where the commentary defines or expands terms absent from the text of the applicable guideline."
If you have a federal sentencing coming up, here are questions to bring to your lawyer:
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Does any part of my guideline calculation depend on a definition or rule found only in the commentary?
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Is my case in a circuit that applies Stinson or one that applies Kisor's stricter test?
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Has an objection to that enhancement been made on the record, in writing and at the sentencing hearing?
Not just gun cases
Commentary questions reach well beyond firearms. Guideline §2B1.1 governs many fraud and theft sentences, where the dollar amount of "loss" drives the range. The Third Circuit's Banks decision gave the loss commentary no weight after Kisor. The Commission then responded with Amendment 827, effective November 1, 2024, which moved the rule that "loss is the greater of actual loss or intended loss" from the commentary into the guideline text itself.
That episode shows two things. First, people charged with white collar, fraud, and theft offenses have a stake in this case too. Second, the Commission can respond to court rulings by moving commentary into guideline text, which goes through the review process that commentary skips.
The limits of a win
A ruling for Beaird would not automatically shorten any particular sentence. SCOTUSblog reports that in Beaird's own case, the district judge noted the same sentence would have been imposed regardless of how the guideline question came out. Judges calculate the range, but the guidelines are advisory, and a judge can explain why a sentence would stand either way.
What to watch next
The Supreme Court's written decision in Beaird will settle which rule applies nationwide: Stinson's broad deference, Kisor's stricter test, or no deference at all. Until then, the circuit split remains, and the safest step for anyone approaching federal sentencing is to make sure that any objection to a commentary-based enhancement is raised and on the record.
Related reading
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Felony Theft Amount by State and How Value Decides Your Charge
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