I need a sample letter to a judge asking that my son be sentenced to mandatory rehab instead of incarceration for three for possession of cds. I was asked to write a letter to the court on why i believe that he should be allowed to go to rehab vice prison.I would like to hear some inputs on this. Re: Methadone Treatment and Methadone Detoxification for Opioid-Dependent Offenders. These sample letters can be used to educate actors in the criminal legal system or child welfare and foster system to permit MOUD.