What a joke of an EO—a combination of empty threats and illegality doomed to failure in court:
https://www.whitehouse.gov/presidential-actions/2025/03/preserving-and-protecting-the-integrity-of-american-elections/

Order: The form going to require proof of citizenship consistent with 20508(b)(3)!

Meanwhile, § 20508(b)(3): The form can't require formal authentication.

¯\_(ツ)_/¯