Warren Petersen
GOP Attorney General Candidate Warren Petersen Joins Lawsuit To Defend Citizen-Only Voting

July 8, 2026

By Staff Reporter |

Senate President and Republican candidate for attorney general Warren Petersen (LD14) has joined a court fight to ensure only citizens vote in elections.

Petersen filed an amicus brief alongside House Speaker Steve Montenegro (R-LD29) in a case where progressive advocates are challenging the Trump administration’s effort to centralize citizen data across multiple agencies in the name of voter identification verification and even immigration enforcement. 

The League of Women Voters (LWV) and several of their local chapters, along with the Electronic Privacy Information Center (EPIC) and five citizens, sued the U.S. Department of Homeland Security (DHS), Social Security Administration (SSA), the Department of Justice (DOJ), and the Attorney General’s Office over the data centralization last September.

These advocacy groups and private citizens claim the Trump administration’s data pooling violates the 1974 Privacy Act. Judge Sparkle Sooknanan with the U.S. District Court for the District of Columbia agreed with them in a ruling last month. The federal government has filed for a stay of judgment pending appeal. 

Rep. Abe Hamadeh (R-AZ-08), announced his intent to file articles of impeachment against Sooknanan for the ruling, which he claimed was an overreach and weaponization of the judiciary against the executive.

“[This ruling] was a blatant and unlawful subversion of the President’s executive authority and a direct assault on election integrity,” stated Hamadeh. “Judges who weaponize their bench to interfere with the President’s constitutional duties must be held accountable.

Petersen argued in their amicus brief that Arizona law relies on the federal Systematic Alien Verification for Entitlements (SAVE) system to process voter registration and government benefit inquiries. 

The lawmakers cited the Purcell principle, a precedent established in the 2006 Supreme Court ruling involving former Maricopa County Recorder Helen Purcell that declares that the courts should avoid ruling to change election rules too close to an election. 

Petersen and Montenegro argued voter confidence in Arizona and other states would be jeopardized if the court declined to withhold enforcement of its ruling while the appeal was underway. Other states impacted by the district court ruling hindering SAVE usage for elections, as well as immigration enforcement, include Florida, Indiana, Iowa, and Ohio. 

“Making changes to an important election-integrity system at this late stage in the election season creates unnecessary confusion for election officials and the public,” stated the brief. “This court’s order altered an election-related process in the middle of elections around the nation and thus harms the states’ interest in maintaining voters’ confidence in the electoral process.”

Their brief also argued that the ruling would fly in the face of federalism, the mechanism on which states rely to exercise their laws. 

Attorney General Kris Mayes and Secretary of State Adrian Fontes have stood opposed to the Trump administration’s data centralization and voter verification efforts as alleged breaches of privacy.

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