I wrote something about this a few weeks back. Proposal 36 in California was passed by California voters in 200 and required that the state offer treatment as an alternative to jail or prison for most nonviolent drug offenders.
Ballot mandated funding for Prop. 36 ended this year and the California legislature had to decide what to do. They’ve passed new funding for it but want to allow short, instant jail sentences for probation violators. The Drug Policy Alliance is prepared to fight them on any incarceration for relapses.