Final answer:
The Supreme Court in Stanford v. Kentucky decided that imposing capital punishment for crimes committed by minors under the age of 18 did not violate the Eighth Amendment, but this was later overturned by Roper v. Simmons in 2005.
Step-by-step explanation:
The Supreme Court decision in Stanford v. Kentucky addressed the constitutionality of imposing capital punishment for crimes committed by individuals under the age of 18. In this case, the Supreme Court held that such a sentencing did not violate the Eighth Amendment’s prohibition against cruel and unusual punishment. It is worth noting, however, that this decision was later superseded by the Roper v. Simmons (2005) case, where the Supreme Court ruled that it is unconstitutional to impose capital punishment for crimes committed while under the age of 18.