The Supreme Court is considering Monday a major elections dispute involving whether federal law bars states from counting mail ballots that are postmarked by, but received after Election Day.

The U.S. Supreme Court is hearing arguments on Monday to decide whether states can continue to count late-arriving mail ballots — an election issue targeted by President Donald Trump.

Mississippi Solicitor General Scott Stewart, arguing before the top court on Monday, said "states have broad power over elections" and have been allowed to count ballots received after Election Day fo...