Tomorrow, when the Supreme Court hears oral arguments in the highest-profile death penalty challenge in seven years, the justices will begin ruling on this question: Does Oklahoma’s use of the common surgical sedative midazolam fail to make prisoners unconscious during lethal injections, thus violating the Eighth Amendment’s protection against “cruel and unusual punishment”? For many court watchers, however, a subject of special scrutiny will be the credibility of Oklahoma’s key expert witness, Dr. Roswell Lee Evans, who has …
