Arizona Attorney General Mark Brnovich, who is fast building a portfolio of key Supreme Court challenges, today ripped Sen. Mark Kelly for his support for ending the filibuster to pass Democratic voting changes, calling the proposal “unconstitutional.”

In an interview, Brnovich, who won a 2021 case in the court to defend Arizona’s voting methods against a challenge from the Democratic National Committee, said the changes the Arizona Democrat is backing in today’s Senate debate on voting reforms would federalize elections.