Three leading election integrity groups urged the Supreme Court on Thursday to prohibit states from counting mail-in ballots that arrive after Election Day, warning that the practice violates federal law and undermines public trust in elections.

Part of Trump’s executive order on elections, signed in March but held up by lawsuits, takes aim at one of the main reasons for late vote counts: Many states allow mailed ballots to be counted

Casting mailed ballots remained popular among voters in last year’s presidential election, even as President Donald Trump has tried to undercut the process through a wide-ranging executive order.

Early voting has begun for the U.S. Congressional District 7 Special Primary Election. This election is being held to fill the seat left vacant after Congressman