Ohio Gov. John Kasich has commuted the death sentence of a convicted killer one month before his scheduled execution. Arthur Tyler has spent nearly three decades on death row for a 1983 murder. But prosecutors and a state parole board recommended clemency over evidence pointing to a co-defendant in the case. Like in Oklahoma, Ohio has faced problems with its lethal injection execution drugs. An execution in January lasted more than 30 minutes and saw the prisoner gasping for air.