Holding: The Eighth Amendment may permit executing a prisoner even if he cannot remember committing his crime, but it may prohibit executing a prisoner who suffers from dementia or another disorder rather than psychotic delusions.
Judgment: Vacated and remanded, 5-3, in an opinion by Justice Kagan on February 27, 2019. Justice Alito filed a dissenting opinion, in which Justices Thomas and Gorsuch joined. Justice Kavanaugh took no part in the consideration or decision of the case.