Kimbrough v. United States
The Supreme Court ruled that federal judges may hand down shorter sentences for crack cocaine offenses than the sentencing guidelines recommend, based on the judge's own view that the guidelines' 100-to-1 crack/powder disparity is unfair.
The decision confirms that the sentencing guidelines are only advisory in every respect, including for crack cocaine, and gives trial judges more room to depart from harsh guideline ranges that a federal sentencing agency itself has repeatedly criticized as excessive and racially skewed in effect.
How it got here: A federal district court gave a below-guidelines sentence; the Fourth Circuit vacated it as per se unreasonable; the Supreme Court agreed to review that ruling.
The Case in Depth
What happened
Derrick Kimbrough pleaded guilty to distributing crack and powder cocaine and to a related firearm charge. His federal sentencing guidelines range was 228 to 270 months, largely because guidelines punish crack cocaine offenses far more severely than equivalent amounts of powder cocaine. The trial judge thought that range was excessive and sentenced him to 180 months, the statutory minimum, based partly on disagreement with the crack/powder disparity.
The question before the Court
Could a judge give a drug dealer a lighter sentence than the guidelines recommended just because he disagreed with how much harsher crack cocaine penalties are than powder cocaine penalties?
The Court's answer
Yes — the Supreme Court ruled that a federal judge may impose a shorter sentence than the crack cocaine guidelines recommend based on disagreement with how much harsher those guidelines treat crack compared to powder cocaine. The guidelines, including the crack cocaine guidelines, are advisory rather than mandatory, so a court of appeals cannot automatically reject a below-guidelines sentence just because it rests on that disagreement.
The Court noted that the sentencing commission itself had repeatedly found the 100-to-1 crack/powder ratio excessive and not based on the kind of research it normally uses, which made judicial skepticism about the ratio especially reasonable. Because the trial judge had properly weighed the required sentencing factors and explained the reasoning, the below-guidelines sentence here was not an abuse of discretion.
Curious how the Court got there? See the step-by-step legal reasoning →
Why it matters
Thousands of people sentenced for crack cocaine offenses — a group that is disproportionately Black — could receive shorter prison terms because judges can now openly factor in disagreement with the crack/powder sentencing gap. It also reinforces that judges nationwide have broad discretion to depart from guideline ranges for any category of offense, not just crack cocaine.
What changes now
The Fourth Circuit's ruling is reversed, and the case goes back to that court for further proceedings consistent with the Supreme Court's decision, meaning Kimbrough's 180-month sentence should now be upheld. More broadly, federal trial judges nationwide can now consider disagreement with the crack/powder ratio when sentencing, though Congress and the Sentencing Commission remain free to change the underlying guidelines or statute.
What this does not decide
The Court did not rule that the crack/powder sentencing disparity itself is unconstitutional or must be eliminated, and it did not require judges to depart from the guidelines in crack cases. It only held that judges may choose to do so based on policy disagreement, without that choice being automatically unreasonable.
Concurrences and dissents
Concurrence — Justice Scalia
Justice Scalia joined the majority but wrote separately to insist that its suggestion that 'closer review' might apply when a judge varies from the guidelines based solely on policy disagreement not be read as retreating from the Court's prior statements that judges are free to reasonably reject the guidelines' advice. He warned that treating the guidelines as anything but fully advisory would revive the Sixth Amendment problem the Court fixed in Booker.
Dissent — Justice Thomas
Justice Thomas argued that the remedy the Court created in Booker was too broad and has left the Court deciding sentencing questions with no real basis in the statute, which he says still makes the guidelines mandatory once read as Congress wrote it. He would apply the mandatory-guidelines statute as written and affirm the Fourth Circuit's decision vacating Kimbrough's below-guidelines sentence.
Dissent — Justice Alito
Justice Alito, relying on his dissent in the companion case Gall v. United States, argued that judges must still give significant weight to the guidelines' policy choices even though they are advisory, though he agreed appellate courts cannot treat the guidelines as binding. He would not treat the crack cocaine guideline differently from any other guideline, and would vacate and remand for reconsideration under that standard.
How the Court got there
The legal reasoning, step by step
- The Court's earlier decision in United States v. Booker made the sentencing guidelines advisory rather than mandatory, meaning judges must consider them but are not bound to follow them, and appellate courts review sentences only for 'reasonableness.'
- The Court examined whether the 1986 law creating the 100-to-1 crack/powder sentencing ratio implicitly required the sentencing commission and judges to treat that ratio as fixed, and found no such requirement in the statute's text, which only sets outer minimum and maximum sentences.
- Drawing on a prior case involving how LSD is weighed for sentencing purposes, the Court reasoned that just as the sentencing commission had been free to depart from a literal statutory approach there, it and sentencing judges remain free to depart from the crack/powder ratio here.
- The Court rejected the government's argument that Congress's past rejection of a proposed 1-to-1 ratio locked in the 100-to-1 ratio, noting Congress never said sentences must differ by exactly that ratio and later allowed a guidelines amendment narrowing the gap to stand without objection.
- The Court concluded that because the crack guidelines were built from the statute's harsh ratio rather than from the commission's usual data-driven method, and because the commission itself had repeatedly found the ratio too severe, a judge could reasonably decide a within-guidelines crack sentence was 'greater than necessary' even in an ordinary case.
- Applying that framework, the Court found the trial judge had properly considered the guidelines, weighed the required sentencing factors, and reasonably concluded a below-guidelines sentence was appropriate, so the sentence was not an abuse of discretion.
Doctrinal impact
Cases affected by this decision
Reaffirms United States v. Booker (543 U. S. 220)
The Court relies on Booker's rule that sentencing guidelines are advisory and reviewed only for reasonableness.
Reaffirms Neal v. United States (516 U. S. 284)
The Court uses this LSD-sentencing case to show agencies and judges may depart from a statute's rigid ratio approach.