Whether the Court could use categorical Eighth Amendment proportionality review, rather than only case-specific review, to assess life without parole for juvenile nonhomicide offenders.
Holding
Yes. A categorical rule was appropriate because the challenge concerned a sentencing practice imposed on an entire class of offenders, not merely the proportionality of one defendant's term of imprisonment.
Reasoning
The Court distinguished ordinary noncapital proportionality cases, such as Harmelin and Ewing, which ask whether a particular sentence is grossly disproportionate to a particular offender's crime. Graham instead challenged life without parole as a punishment for every offender who committed a nonhomicide crime while under 18. That kind of claim called for the categorical approach previously used in Eighth Amendment cases involving the death penalty.
Under the categorical approach, the Court first examines objective evidence of contemporary standards, including legislation and actual sentencing practices. It then exercises independent judgment by considering the offender class's culpability, the penalty's severity, and whether the punishment meaningfully advances legitimate penological goals.
A case-by-case approach would not adequately protect juvenile offenders because sentencers cannot reliably distinguish the rare juvenile who is permanently incorrigible from the far larger group whose criminal conduct reflects transient immaturity. The brutality of an offense may also overwhelm mitigating evidence of youth, and juveniles face distinctive difficulties in understanding proceedings and assisting counsel. A categorical rule prevents those risks from producing irrevocable sentencing judgments.