Federal election officials are seeking an emergency halt to a judge’s order requiring Kansas and Arizona voters to provide proof of citizenship when registering to vote with a national form.

At issue is U.S. District Judge Eric Melgren’s order requiring the U.S. Election Assistance Commission to immediately change the federal voter registration form to require Kansas and Arizona residents to provide documents proving their citizenship.

On Thursday, the commission asked the 10th U.S. Circuit Court of Appeals for an emergency administrative suspension of Melgren’s order while it considers its motion for full stay pending appeal. It also asks the court to consider its appeal on an expedited basis, preferably in a special session this summer.

The filing comes a day after Melgren refused to suspend his own order during the appeal.