Mont v. United States

Background

Jason Mont, a former federal prisoner, completed his prison term and began five years of supervised release in 2012. While on supervision he was later arrested on state drug charges and spent months in pretrial jail. The state court eventually convicted him, credited roughly ten months of his pretrial custody as time served, and sentenced him to six years. After that conviction, the federal court revoked Mont’s supervised release and added 42 months of federal prison time.

Reasoning

The central question was whether time someone spends in pretrial jail counts as being “imprisoned in connection with a conviction” so that the federal supervised-release clock is paused. The Court, writing for the majority, held that pretrial detention does count if a later-imposed sentence credits that detention as time served. The majority relied on the statute’s words and context, noted that courts commonly credit pretrial custody against later sentences, and explained that the law allows a court to make this tolling calculation after conviction or release, consistent with the statute’s 30-day rule.

Real world impact

As a result, defendants who are jailed before trial and later receive credit for that time will generally have their federal supervised-release periods paused for the credited period. That can preserve a federal court’s authority to revoke supervision and impose additional prison time after state sentences conclude. The ruling resolves conflicting appeals-court decisions about tolling.

Dissents or concurrances

A dissent argued the statute’s present tense means tolling should apply only to postconviction imprisonment, warned the majority’s approach creates uncertainty for detained defendants, and said courts can instead use warrants to preserve revocation authority.