California’s Proposition 36, enacted as a ballot measure aimed at diverting certain drug and theft offenders into treatment rather than incarceration, has instead resulted in a significant increase in felony arrests and raised concerns over its implementation and effectiveness. Since its passage, the law has led to approximately 40,000 new felony arrests statewide, complicating an already strained criminal justice system.

Proposition 36 introduced the category of “treatment-mandated felonies,” intended to prioritize rehabilitation for people charged with drug-related offenses. However, the measure was created without legislative backing, clear operational guidelines, or dedicated funding streams, contributing to a fragmented application across California’s 58 counties. According to data collected from 29 courts, of 10,937 felony drug cases tracked, only 36 defendants who chose treatment completed the requirements successfully enough to secure dismissal of their charges.

The new mandate has not only failed to alleviate jail populations but has also led to ongoing detention of thousands of individuals in county facilities due to inconsistent county-level implementation. Law enforcement agencies cite a lack of necessary resources to support treatment programs and probation supervision, resulting in what some describe as a revolving door of short-term interventions that fail to address the underlying issues of addiction.

More than 1,000 individuals have been incarcerated in state prison under provisions introduced by Proposition 36, with older Black defendants—many grappling with addiction and homelessness—disproportionately affected. Critics argue that the law blurs the boundaries between treatment providers and law enforcers, creating conflicting roles that hinder effective rehabilitation.

Initial funding of $100 million allocated by the governor and legislature was reduced to $50 million this year, far below the $400 million investment some lawmakers have called for to create a comprehensive and effective treatment system. Supporters of the measure seek increased funding to develop a framework where failure in treatment results in punishment, aiming to balance rehabilitation with accountability.

Nevertheless, opponents highlight that the lack of clear criteria for treatment success and the punitive elements embedded in the current framework may steer California back toward patterns of mass incarceration. They warn that the system continues to trap economically disadvantaged individuals struggling with addiction in an underfunded and inconsistent structure, undermining the original intent of Proposition 36 to provide an alternative to incarceration.