The measure, known as the First Step Act, gives judges more discretion when sentencing some drug offenders, eases mandatory minimum sentences and encourages inmates to participate in programs designed to reduce the risk of recidivism, with credits that can be used to gain an earlier release.

Donald Trump says he wants to cut the unemployment rate for ex-inmates to single digits within five years.

The First Step Act directs the federal Bureau of Prisons to assess which inmates should earn credits toward completing their sentences in halfway houses or home confinement.