Taxpayers will pick up most of the $715-a-day cost of state hospital treatment for Ethan Couch who killed four people and injured two others in a drunken driving crash in June 2013 when he was 16. Couch, who turned 17 on Friday, was sentenced to probation after pleading guilty to a list of charges including intoxication manslaughter. His attorneys argued that his wealthy parents coddled him into a sense of irresponsibility, a condition one witness called "affluenza." At the time, the teen’s parents said they would pay for mental health treatment at a private facility in California, which costs about...