The Substance Use and Mental Health Program (SUMH) studied the impact of 2009 reforms to New York State's Rockefeller Drug Laws that eliminated mandatory minimum sentences for people convicted of a range of felony drug charges and expanded eligibility for diversion to treatment. Researchers compared cases pre- and post-reform to assess changes in the use of jail and prison, rates of diversion to treatment, racial disparities in sentencing, recidivism, and cost.