Roper v. Simmons
Facts
At age 17, Christopher Simmons planned and carried out the murder of Shirley Crook with a younger accomplice. Simmons had discussed beforehand that he wanted to commit burglary and murder and said they could "get away with it" because they were minors. After breaking into Crook's home, Simmons and his accomplice bound her, drove her to a state park, and took her to a railroad trestle over the Meramec River. Simmons was later tried after he turned 18 and received a death sentence for a crime committed while still under 18.
Issue
Does the Eighth and Fourteenth Amendments permit a State to impose the death penalty on an offender who was older than 15 but younger than 18 when he committed a capital crime? More specifically, may an offender who was under 18 at the time of the offense be executed consistent with the Constitution?
Rule
The Eighth and Fourteenth Amendments forbid imposition of the death penalty on offenders who were under the age of 18 when their crimes were committed. Juvenile offenders under 18 are categorically less culpable than adult offenders, and the death penalty is disproportionate punishment for that class.
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