The Trump administration is asking the Supreme Court to green-light a new Postal Service rule that would exert control over mail-in ballots ahead of the midterm elections.

The appeal comes after U.S. District Judge Indira Talwani issued a temporary restraining order last week blocking parts of the rule from being implemented.

While Talwani’s order “allows the Postal Service and the States to continue taking steps to ensure that their envelopes satisfy the rule’s requirements, the order risks sowing confusion and chaos because it makes those preparatory steps voluntary, rather than mandatory,” Solicitor General John Sauer wrote.