boyd sentenced couch to 10 years probation - drawing outrage from far and wide. >> reporter:tarrant county prosecutors told cbs 11 they could not find a legal reason to appeal. attorney joennon said. >>"during his recent trial, the 16-year-old admitted his guilt in four cases of intoxication manslaughter and two cases of intoxication assault. there has been no verdict formally entered in the two intoxication assault cases. every case deserves a attorney's office is asking teen on the two intoxication >> reporter:and tonight, we also know more about couch's parents. both have a long criminal history. according to the johnson county sheriff's office fred couch was arrested for d-w-i in 19-92, criminal mischief in 19-94, and assault with bodily injury in 19-96. >> reporter:tonya couch was charged with reckless driving in 2003. during the trail, ethan couch's attorneys argued he was not responsible for his actions -- because his parents were not involved and gave him everything he wanted. one defense psychologist called it "affluenza". as far as the intoxication assault charges -- the maximum sentence couch faces is three years behind bars. >> pam: evidence that the porsche