couch, the so-called affluenza teen, is mounting a high-profile defense to fight extradition from mexico to the u.s. fernando benitez confirms to nbc news he's representing couch. he says the 18-year-old was unlawfully detained in puerto vallarta last week and has committed no crime in mexico. benitez filed paperwork last week that blocks his deportation. imdwrags attorneys say the legal process could drag on for months. couch's mother, tanya, was deported to the u.s. last week and awaiting extradition from los angeles to texas, that could happen early this week. the pair had been on the run since failing to check in with his probation officer. ethan couch killed four people when he drove drunk in 2013. let's get down to business with cnbc's landon dowdy. >> wall street could start the new year on a negative note following big declines in asia