Questioning by U.S. Supreme Court justices fell along partisan and ideological lines Monday during oral arguments in a case that could upend mail voting practices in Illinois and more than two dozen o...

In more than two hours of oral arguments Monday, the U.S. Supreme Court debated whether federal law allows states to count mail-in ballots received after Election Day.

Before the Supreme Court is Mississippi's law, which allows mail ballots that are received up to five days after the election to be counted as long as they were postmarked by Election Day.