President Donald Trump on Tuesday signed an executive order that the White House says is aimed at cracking down on mail-in voting.

President Donald Trump is slated to sign an executive order intended to make it harder for voters to cast mail-in ballots, according to the Daily Caller, escalating his long-running campaign against a practice used by millions of Americans.

The executive order will reportedly require the administration to compile a list of confirmed U.S. citizens who are eligible to vote.

Trump has put pressure on Congress to pass the SAVE America Act, a measure that would require photo identification and proof of U.S. citizenship to vote.

The order will require a list to be created in each state of citizens who are eligible to vote. Absentee ballots will only be sent to those on the approved list. Ballots will have secure envelopes with barcodes to track them.

Trump signed an order to create a nationwide voter list and restrict mail ballots, a move expected to face legal challenges.

It also seeks to bar the U.S. Postal Service from sending absentee ballots to those not on each state’s approved list.

President Trump will sign an executive order focused on mail-in voting Tuesday afternoon at the White House. The order will require Homeland Security Secretary Markwayne Mullin, aided by the Social