When a state conditions a capital defendant's eligibility to be sentenced to death on a jury's determination of "future dangerousness," can the state refuse to recognize challenges to the accuracy of the jury's determination as cognizable grounds for post-conviction review?

Does it violate the protections of the Eighth and Fourteenth Amendments to the United States Constitution to execute an individual who does not meet the eligibility criteria for a sentence of death under state law?

Whether the Eighth and Fourteenth Amendments prohibit executing a capital defendant who may not meet state-law eligibility criteria for the death penalty based on challenges to the jury's 'future dangerousness' determination