WASHINGTON - JANUARY 07: Attorney Donald B. Verrilli, Jr. speaks in front of the U.S. Supreme Court after arguments January 7, 2007 in Washington DC. The lethal injection protocol used to execute death-row inmates in the state of Kentucky is being challenged as cruel and unusual because it is potentially extremely painful if the first injection, sodium thiopental, wears off too quickly.  (Photo by Mark Wilson/Getty Images)