Popular attitudes towards crime in Latin America induce local legislators to support harsh sentencing frameworks. What, therefore, explains the adoption of non-prison sentences across the region? Using Brazil as a case study, this article claims that sentencing reform is a consequence of the growing autonomy of bureaucrats who manage the criminal justice system. Insulated from patronage networks and granted broad mandates to pursue solutions to pressing penal crises, these policy elites use their position in the state to develop new rules and facilitate their approval despite popular opposition to measures that limit the state's punitive capacity. The findings point to the importance of bureaucratic autonomy for the enactment of policies that can benefit the underprivileged but do not enjoy widespread support from voters.