Justice Alito, joined by Chief Justice Roberts and Justices Scalia and Thomas, argued that the Court had not identified a genuine national consensus against capital punishment for child rape. In his view, the broad language of Coker had discouraged legislators from enacting child-rape capital statutes because they reasonably expected those laws to be invalidated. Legislative inaction under that shadow could not fairly be treated as an affirmative moral judgment against the punishment.
The dissent viewed the recent enactment of targeted child-rape capital statutes in six States as more meaningful than the majority allowed. It argued that stalled proposals in other States could reflect litigation uncertainty or the high financial cost of capital prosecutions, rather than a belief that executing the worst child rapists is morally unacceptable. Nor did the absence of recent executions prove consensus, because capital litigation had largely halted executions generally before Coker and the newer statutes had existed too briefly to produce executions.
Justice Alito criticized the majority for relying on policy objections that, in his view, were for legislatures rather than the Eighth Amendment. Whether a capital penalty could discourage reporting, increase victims' burdens, or affect an offender's incentive to kill were legislative policy questions, not grounds for a categorical constitutional rule protecting defendants.
The dissent also rejected the conclusion that capital sentencing could not be adequately narrowed in child-rape cases. Several statutes already restricted eligibility to repeat sex offenders, and States could use concrete aggravators such as kidnapping, severe physical injury, multiple rapes, repeated abuse over time, or multiple victims. Likewise, concerns about child-witness reliability did not justify invalidating every statute, particularly where independent corroborating evidence exists or a State could require it.
Finally, Justice Alito maintained that the majority did not persuasively explain why every capital murderer is more morally depraved than the worst child rapist. A repeat offender who kidnaps, tortures, and repeatedly rapes several children may be more culpable than some defendants eligible for death under felony-murder rules. Because child rape can inflict profound and enduring harm on victims and society, he would have deferred to Louisiana's legislative judgment and affirmed the sentence.