Eighth Amendment:
Excessive bail shall not be required, nor excessive fines imposed, nor cruel and unusual punishments inflicted.
The Court's conclusion that execution of juveniles constitutes cruel and unusual punishment evolved in much the same manner. Initially, a closely divided Court invalidated one statutory scheme that permitted capital punishment to be imposed for crimes committed before age 16, but upheld other statutes authorizing capital punishment for crimes committed by 16- and 17-year-olds. Important to resolution of the first case was the fact that Oklahoma set no minimum age for capital punishment, but by separate provision allowed juveniles to be treated as adults for some purposes.1 Although four Justices favored a flat ruling that the Eighth Amendment barred the execution of anyone younger than 16 at the time of his offense, concurring Justice O’Connor found Oklahoma’s scheme defective as not having necessarily resulted from the special care and deliberation that must attend decisions to impose the death penalty. The following year Justice O’Connor again provided the decisive vote when the Court in Stanford v. Kentucky held that the Eighth Amendment does not categorically prohibit imposition of the death penalty for individuals who commit crimes at age 16 or 17. Like Oklahoma, neither Kentucky nor Missouri2 directly specified a minimum age for the death penalty. To Justice O’Connor, however, the critical difference was that there clearly was no national consensus forbidding imposition of capital punishment on 16- or 17-year-old murderers, whereas there was such a consensus against execution of 15-year-olds.3
Although the Court in Atkins v. Virginia contrasted the national consensus said to have developed against executing persons with intellectual disabilities with what it saw as a lack of consensus regarding execution of juvenile offenders over age 15,4 less than three years later the Court held that such a consensus had developed. The Court's decision in Roper v. Simmons5 drew parallels with Atkins. A consensus had developed, the Court held, against the execution of juveniles who were age 16 or 17 when they committed their crimes. Since Stanford, five states had eliminated authority for executing juveniles, and no states that formerly prohibited it had reinstated the authority. In all, 30 states prohibited execution of juveniles: 12 that prohibited the death penalty altogether, and 18 that excluded juveniles from its reach. This meant that 20 states did not prohibit execution of juveniles, but the Court noted that only five of these states had actually executed juveniles since Stanford, and only three had done so in the 10 years immediately preceding Roper. Although the pace of change was slower than had been the case with execution of persons with intellectual disabilities, the consistent direction of change toward abolition was deemed more important.6
As in Atkins, the Court in Roper relied on its own independent judgment
in addition to its finding of consensus among the states.7 Three general differences between juveniles and adults make juveniles less morally culpable for their actions. Because juveniles lack maturity and have an underdeveloped sense of responsibility, they often engage in impetuous and ill-considered actions and decisions.
Juveniles are also more susceptible than adults to negative influences
and peer pressure. Finally, the character of juveniles is not as well formed, and their personality traits are more transitory, less fixed.
8 For these reasons, irresponsible conduct by juveniles is not as morally reprehensible,
they have a greater claim than adults to be forgiven,
and a greater possibility exists that a minor’s character deficiencies will be reformed.
9 Because of the diminished culpability of juveniles, the penological objectives of retribution and deterrence do not provide adequate justification for imposition of the death penalty. The majority preferred a categorical rule over individualized assessment of each offender’s maturity, explaining that [t]he differences between juvenile and adult offenders are too marked and well understood to risk allowing a youthful person to receive the death penalty despite insufficient culpability.
10
The Roper Court found confirmation for its holding in the overwhelming weight of international opinion against the juvenile death penalty.
11 Although not controlling,
the rejection of the juvenile death penalty by other nations and by international authorities was instructive,
as it had been in earlier cases, for Eighth Amendment interpretation.12