He was nonetheless charged with violating the terms of his supervised release, and he sought to challenge the court's jurisdiction to hear the case, arguing that his pretrial detention for the later offenses.

The Supreme Court decided that a term of supervised release is paused by imprisonment for another offense in a 5–4 decision that did not conform to typical ideological lines.

[2] Mont later entered into a plea deal where he pleaded guilty to the state charges and a sentencing hearing was set for December 2016.

[2] In late October 2016, Mont admitted to the District Court that he had violated the terms of his supervised release, but objected to a supervised-release hearing in November of that same year to allow the state conviction to become final.

[2] After several delays, Mont, in late March 2017, was finally sentenced to six years' imprisonment with the ten months in pretrial detention counted as time served, and the District Court scheduled a hearing for June 28, 2017.

"[13] Specifically, Mont argued that pretrial detentions are only in connection with a conviction when the defendant is found to be guilty, thus imposing a retroactive definition not contemplated in the statute nor its history.

[14] In a majority opinion by Justice Thomas, the Court ruled in favor of the United States, holding that terms of supervised release are tolled while a person is in pretrial detention in accordance with 18 U.S.C.

The Court employed a firm textualist approach to the statute, stating that the dictionary definition of "imprisonment" clearly includes pretrial detention.

"[2] The Court agreed with the United States that the purpose of supervised release would be frustrated by a reading that allowed a term to continue concurrently with pretrial detention, therefore holding that tolling is appropriate and affirming the decision of the Sixth Circuit.