Warren Petersen Steps In to Defend State's Sex Offender Registry Laws

Arizona Senate President Warren Petersen (R-AZ) is taking his defense of the state's sex offender registration requirements to the federal appeals court, filing a legal brief late last week in a case that could determine how closely law enforcement can monitor convicted offenders going forward.

The case, Doe v. Sheridan, is now before the Ninth Circuit Court of Appeals after a federal judge previously upheld Arizona's lifetime registration and reporting requirements for convicted sex offenders.

The plaintiff, a convicted sex offender who pleaded guilty to crimes involving a minor and accepted lifetime probation and registration as part of that plea, is now appealing that ruling, arguing the requirements are unconstitutional.

Among the requirements being challenged is a provision compelling offenders to report their online identifiers, including social media accounts, to law enforcement. Supporters of the law say that the tool is critical for investigating crimes and preventing repeat offenses.

Prolonged Legal Fight

Petersen has been a central figure in the legal fight, particularly after Arizona Attorney General Kris Mayes (D-AZ) declined to defend the law in court, a decision he called a dereliction of duty.

"It is deeply concerning that Arizona's Attorney General has chosen not to defend this law," Petersen said. "When the state refuses to stand behind its own laws, especially those designed to protect children, the Legislature has a duty to act."

With the AG's office on the sidelines, Petersen and the Legislature intervened and successfully defended the law at the trial court level. The new brief continues that effort before the Ninth Circuit.

"These requirements give law enforcement the ability to track convicted offenders, investigate crimes, and prevent future harm," Petersen said. "Weakening those safeguards does not make anyone safer, it only makes it easier for offenders to operate without oversight."

The Ninth Circuit will now decide whether to uphold the lower court's ruling and keep Arizona's registration framework in place.

For Petersen, the stakes are straightforward: a rollback of the law, he argues, would leave Arizona families measurably less protected.