The long-ago husband of former first lady Jill Biden has pleaded not guilty to charges that he killed his current wife in Delaware. Officials say 77-year-old William Stevenson remains in custody on $2 million bail. He was married to Jill Biden from 1970 to 1975. A state grand jury this month charged Stevenson with killing 64-year-old Linda Stevenson. Police say she was found unresponsive at their home on Dec. 28. His lawyer did not immediately return messages seeking comment.
