Drug Rehab a Rare Commodity in Prison.  ♠ Daily Beast.
Treatment for drug addiction works better.    ♠ Daily Beast.
The American Prison Nightmare.  ♠ N.Y.  Review of Books
Prison overcrowding.   ♠ A Public Defender.com  

Reports have shown that drug rehab in jail works but following some hard years, Arizona like many other states have firmed up their  abandonment of  rehabilitation policy for their inmates.  Aside from minor pilot studies, the policy of these states is on punishment.  Criminalized drug addicts, and the mentally ill are not treated according to Defense Attorney, Jason Lamm,   This practice continues even though a 2009 report released by the California Department of Corrections and Rehabilitation shows a substantial reduction in recidivism for offenders completing in-prison substance abuse programs followed by community-based substance abuse treatment.  To be fair some state prison do better but  The Federal Bureau of Prisons does look at rehabilitation as a goal.  How do we get states to follow the lead.