Does the Eighth Amendment bar individuals with intellectual-and-developmental-disabilities from receiving mandatory-life-imprisonment-without-parole sentences?

QUESTION PRESENTED Juveniles and individuals with intellectual and developmental disabilities are understood to be less culpable than other defendants. Because of this diminished level of culpability, neither group is eligible for the death penalty. In Miller v. Alabama, this Court concluded that juveniles cannot be subject to mandatory life imprisonment without eligibility for parole sentences. The Question Presented is: Does the Eighth Amendment bar individuals with intellectual and developmental disabilities from receiving mandatory life imprisonment without parole sentences? i