The Trump administration has approached the Supreme Court again, seeking permission to implement new restrictions on mail-in voting. This request came on Thursday, just a day before the first mail ballots are scheduled for distribution ahead of the November midterm elections.

Legal challenges to President Trump’s executive order continue in lower courts. Previously, the Supreme Court allowed the administration’s plan to proceed while litigation is ongoing. However, the justices have not yet decided on the legality of the policy.

According to Trump’s executive order, the U.S. Postal Service may reject delivery of ballots from states that do not provide lists of eligible voters or adhere to standardized ballot envelope requirements.

The Supreme Court filing followed a federal court session in Boston. During this session, a Justice Department lawyer could not confirm to the judge whether the systems required for the new policy were operational.

U.S. District Judge Indira Talwani questioned Justice Department lawyer Michael Velchik on whether the Postal Service could execute the plan outlined in Trump’s executive order, issued last spring.

A significant aspect of the plan involves an online portal designed to monitor millions of mail ballots. States must upload lists of mail-in voters to the portal for their ballots to be delivered. If there is a mismatch between system information and what appears on ballot envelopes, the ballots will not be sent.

Judge Talwani raised concerns about whether the government was conducting an “experiment” to assess system functionality during the upcoming election.

I don’t even have a declaration from the Postal Service: ‘This is how it will work.’ I don’t have it. I have nothing,

she stated.

This story is ongoing and will be updated as information emerges. The Associated Press contributed to this report.

Newsweek editors involved in this story are Jason Lemon and Gray R. Thomas.