The FBI and U.S. Marshals have joined the search for “Affluenza” teen Ethan Couch, who killed four people in a drunk-driving accident at age 16 and now may have fled the country. Couch’s lawyers claimed in court that he suffered from “affluenza,” a made-up, non-medical condition. The condition supposedly meant the boy didn’t know the consequences of his actions because his wealthy parents had never reprimanded him for anything. Officials say Couch and his mother may have fled the country after he missed a probation appointment and after a video of him playing beer pong surfaced—a violation of his 10-year probation sentence. Federal authorities say their resources can help in the event the teen and his mom fled abroad.