As already noted, on March 19, a U.S. District Court in Kansas ruled that the Election Assistance Commission, a federal agency, must provide Kansas and Arizona election officials with a federal voter registration form that instructs applicants that if they use the form, they must attach proof of citizenship. The case is Kobach v U.S. Election Assistance Commission.
On March 27, the intervenors in the case who are opposed to the efforts of Kansas and Arizona filed a notice of appeal to the Tenth Circuit. The intervenors are various voting rights organizations, including the League of Women Voters and Project Vote. It is not known if the EAC itself will appeal, but whether it does or not, the intervenors have the right to appeal.