The Supreme Court on Monday allowed President Donald Trump's executive order restricting mail-in voting to move forward, though the extent of its implementation before the approaching midterm elections remains uncertain.

The decision could still face further court challenges, potentially delaying the order's impact. With some states preparing to send out mail ballots in the coming weeks, the window for imposing significant changes is narrowing.

Mail-in voting has been a frequent target for Trump, who has asserted that it facilitates fraud, despite a lack of substantial evidence to support these claims and his own past use of the method.

This case is one of several voting-related challenges that could reach the Supreme Court. The Justice Department had submitted an emergency appeal requesting the court permit the commencement of implementation of the order's changes prior to the midterms.

President Trump's executive order, signed in March, mandates that his administration compile lists of eligible voters. It also directs the U.S. Postal Service to deliver mail ballots exclusively to individuals on these compiled lists.