Kimbrough v. United States

Booker severed the statutory provision that had made the Guidelines mandatory. The Guidelines therefore remain an important starting point and benchmark, but they are one factor among those listed in § 3553(a). The sentencing court's controlling obligation is to impose a sentence sufficient, but not greater than necessary, to satisfy the purposes of punishment, deterrence, public protection, and rehabilitation.

Nothing in the Anti-Drug Abuse Act of 1986 expressly required courts to apply a 100-to-1 crack/powder ratio throughout the Guidelines range. The statute established mandatory minimum and maximum penalties at specified drug quantities, but it did not prescribe the appropriate sentence between those statutory limits. The Court declined to infer a broader command from Congress's silence, especially because Congress knows how to issue explicit sentencing directives when it intends to do so.

Neal v. United States supported this conclusion. There, the Court recognized that the Sentencing Commission could use a Guidelines method for calculating LSD weights that differed from the statutory method governing mandatory minimums. Likewise, the existence of crack-based mandatory minimums does not require the Commission—or, after Booker, sentencing courts—to apply the statutory 100-to-1 ratio to drug quantities outside the mandatory-minimum thresholds.

Congress's 1995 rejection of a proposed one-to-one ratio did not make the 100-to-1 ratio binding. Congress said only that crack sentences should generally exceed powder sentences and directed the Commission to propose a revised ratio. That response did not require sentencing courts to preserve a precise 100-to-1 disparity in every case. Congress also did not disapprove the Commission's later 2007 amendment reducing crack offense levels.

The possibility that sentencing judges may reach different outcomes does not make the crack/powder ratio effectively mandatory. Avoiding unwarranted disparity is itself one factor under § 3553(a), to be balanced against the other statutory considerations. Booker accepted that advisory Guidelines and reasonableness review would permit some variation while still promoting national sentencing uniformity.

The crack Guidelines were an especially appropriate subject for policy disagreement because they did not result from the Commission's usual empirical, data-driven process. Instead, the Commission incorporated the statutory 100-to-1 ratio, then repeatedly concluded from research and sentencing experience that the ratio overstated crack's relative harmfulness, could punish lower-level crack dealers more severely than major powder suppliers, and undermined confidence in the justice system. Thus, a court could reasonably find that the disparity yields excessive punishment even in a mine-run case.

The District Court began with the correct advisory range of 228 to 270 months and then considered the offense's circumstances, Kimbrough's personal history, and the statutory purposes of sentencing. It observed that the offense was an unremarkable drug-trafficking case and that Kimbrough had no prior felony convictions, an honorable military discharge, and a steady work history.

The court also reasonably considered the Sentencing Commission's longstanding criticism of the crack/powder disparity. It compared Kimbrough's range with the substantially lower range that would have applied to an equivalent amount of powder cocaine, but it did not substitute a new ratio of its own for the Guidelines' ratio.

The court ultimately grounded its judgment in § 3553(a)'s parsimony command, concluding that the crack Guidelines drove the offense level higher than necessary to do justice in this case. Because the Government challenged the sentence only on the erroneous premise that the ratio was mandatory, and because the court's explanation was tied to the statutory factors, the 4.5-year variance was not an abuse of discretion.