Criminal justice clients are a significant percentage of clients who are currently taking part in drug treatment programs in Stanford, California and in the USA. Judges in the U.S. often find it more helpful to rehabilitate people who have wound up in the criminal justice system for drug related crimes, instead of penalizing them to no avail with time in jail and other penalties. It has proven more successful to address the issue of addiction more straightforwardly, than to enforce these sorts of penalties. The majority of who do not end up in drug rehab will typically wind back up in the criminal justice system, whilst criminal justice clients in drug treatment generally don't make the same mistakes and have a much better chance at remaining abstinent and out of the court system for good.