Senators voted 87-12 on the legislation, which merges a House-passed prison reform bill aimed at reducing recidivism with a handful of changes to sentencing laws and mandatory minimum prison sentences.

Its passage is also a win for Jared Kushner, Trump's son-in-law and senior adviser, who took on criminal justice reform as one of his primary policy goals and who has lobbied individual senators to back the bill for months.

Conservative lawmakers had scrambled to make changes to the White House-backed bill ahead of the vote Tuesday night. Twelve Republican senators ended up voting against the measure despite Trump's support.