The Trump administration again asked the Supreme Court to allow the U.S. Postal Service's plan to restrict mail-in voting for the midterm elections, filing an emergency application on Sunday.

President Donald Trump, who signed his executive order targeting mail-in ballots in March, has for years cast doubt on their security, although evidence of voter fraud is rare.

The appeal came shortly before a federal judge was set to decide whether to issue an injunction blocking requirements dictating how mail-in ballots are sent.

The Trump administration asked the Supreme Court to lift a block on its USPS mail-ballot rule as states begin shipping ballots out.