On Tuesday, the Biden administration sued the state of Arizona over its law requiring proof of citizenship before voting in a presidential election.

In March, Arizona Governor Doug Ducey signed a new law into effect mandating that voters show documentary proof of citizenship in order to vote by mail or vote in a federal election.

The Daily Wire reports:

“House Bill 2492’s onerous documentary proof of citizenship requirement for certain federal elections constitutes a textbook violation of the National Voter Registration Act,” Assistant Attorney General Kristen Clarke said in a statement.

“Arizona has passed a law that turns the clock back on progress by imposing unlawful and unnecessary requirements that would block eligible voters from the registration rolls for certain federal elections,” Clarke added.

The DOJ’s Civil Rights Division is leading the lawsuit. The lawsuit argues that the Arizona law violates the National Voter Registration Act (NVRA), which requires that voters before participating in a federal election fill out a federal form. While the form does not require documented proof of citizenship, it does ask under penalty of perjury whether or not one is a citizen.

Arizona Attorney General Mark Brnovich responded to the lawsuit in a post on Twitter: “It’s another round of Brnovich v. Biden as his DOJ continues its attempts to undermine our election integrity laws. I will see you in court. Again.”

“Federal law prohibits non-citizens from voting in federal elections. Arizona law prohibits non-citizens from voting for all state and local offices, and requires proof of citizenship,” Ducey said in a letter.