FORT LAUDERDALE, Fla. -- A hearing that could mean a return to prison for convicted killer Lionel Tate, once the youngest person in modern U.S. history sentenced to life behind bars, was postponed Monday after he sent the judge a letter threatening suicide. Tate, convicted at age 13 of beating and stomping to death a 6-year-old girl, was set to appear before Circuit Judge Joel T. Lazarus, who could send him back to prison for as much as life if he finds Tate violated his probation. Tate is accused of robbing a pizza delivery man at gunpoint. However, the judge...