The Court is expected to clarify a 2002 ruling that exempts the mentally retarded from death penalty
Capital Punishment
Missouri Executes Man for Rape and Murder of Teen
Michael Taylor was officially pronounced dead 10 minutes after midnight
Another Missouri Inmate Scrambles to Halt Execution
Death row inmate Michael Taylor is set to be executed on Wednesday with secretive lethal injection drugs
Missouri Denied Execution Drugs By Pharmacy
But officials have said the death sentence will be carried out anyway