The U.S. Supreme Court, voting 5-4, has upheld the use of a drug in Oklahoma's lethal injection protocol that has been criticized as likely to cause inmates cruel and unusual punishment, The Huffington Post's Kim Bellware reports. Lawyers for the inmates on Oklahoma's death row aruged that midazolam "can't reliably render an inmate unconscious and free of pain while the second and third drugs paralyze him and stop his heart, thus making the execution cruel and unusual punishment."