Fiscal suicide, with a system fair neither to the prisoners or those who imprison them.
I think of another, older, more "primitive" justice system, and see no prisons. The only punishments are financial (you steal you are fined a multiple of what you stole, or are in forced labor till you pay it back), beatings (public, of course) or death.
Recidivism in such a system is far lower, and there are no costs of 45,000 dollar a year per inmate to send them to "graduate school for crime."
Of course, reforming our draconian drug laws would also help, since the majority of incarceration in any state are for drug related offenses.
Thirsting for Inspiration | FINANCIAL SENSE