The U.S. Supreme Court declined on Monday to hear a challenge to Mississippi’s lifetime ban on voting by people convicted of a wide range of felonies, a policy adopted in 1890 during the Jim Crow era that stands as one of the toughest such restrictions in the nation.

The justices turned away an appeal of a lower court’s decision rejecting a lawsuit that claimed that the ban – a provision of the Mississippi constitution that applies even after a sentence has been completed – violates the U.S. Constitution’s 14th Amendment promise of equal protection and Eighth Amendment bar on cruel and unusual punishments.

The class action suit was brought in 2018 by six Mississippi men – including white and Black plaintiffs – who lost the right to vote even though they have completed their sentences for various felonies, including grand larceny and receiving stolen property.