WARREN PETERSEN: Standing In The Gap: The Senate’s Fight To Keep Arizona Conservative

by Warren Petersen | Dec 16, 2025 | Opinion

By Sen. Warren Petersen |

For years, Arizona has been an emerging bastion of conservative leadership. Recently the AZ Republic called the Legislature the “most conservative” ever. Over the last decade it has passed landmark policies and defended critical laws around the country, setting an example for the rest of the nation to emulate.

This conservative advantage was threatened a few short years ago, when Katie Hobbs and Kris Mayes assumed their positions as Arizona governor and attorney general, respectively, after an extremely volatile election cycle. These two have stopped at nothing to insert their radical agenda as they seek to transform our state into a liberal utopia to please their friends in California and New York.

While Hobbs has sought to remake Arizona’s policies from her perch as the state’s chief executive, Mayes has been busy on the legal side. Throughout her tenure in office, Mayes has either done the bare minimum or nothing at all to defend key Arizona or national laws. Instead, she has spearheaded the left’s efforts to undermine President Trump’s work to make America great again.

Thankfully, however, the Arizona Legislature, under my leadership as Senate President, has stepped in the gap to uphold laws of great importance to our citizens. Despite our state’s top prosecutor missing in action as she seeks affirmation from her colleagues in New York and California, we have led or joined dozens of lawsuits and legal briefs to preserve conservative laws across our state and nation. These efforts have largely been unprecedented, as legislatures typically defer to their state attorneys general or other government prosecutors on the legal fronts. From early on, though, in Arizona’s divided government, I determined that our state could not afford to sit on the sidelines as Mayes hijacked our legal apparatus for her extremist ways. As a result, Arizona has again asserted itself as a national example, showing other states how to maintain the rule of law in the face of divided governments.

Here are some of the highlights of the cases:

Protecting Election Integrity

In the absence of the state’s attorney general taking action, the Arizona Legislature has been engaged in a prolonged legal battle to protect the integrity of our state’s elections, defending two laws that restrict voters who do not provide documentation that confirm their American citizenship. After I filed an emergency stay application at the U.S. Supreme Court, the Justices affirmed Arizona’s right to reject state form registrations that do not include proof of citizenship. This case is ongoing because of activist judges on the Ninth Circuit Court of Appeals who are attempting to circumvent the Supreme Court’s ruling. Arizona will continue to defend our own law, and we will come to the aid of any state working to require proof of citizenship.

Protecting the Integrity of Women’s Sports

Over half the states in America have enacted legislation to preserve fairness in sports, including Arizona, which passed the Save Women’s Sports Act, to ensure that girls’ athletic events at public schools are reserved for biological females. Arizona’s law, like most other states, remains tied up in federal litigation, with the Legislature itself stepping in to defend the statute after Mayes declined to do so. We defended Arizona’s law up to the U.S. Supreme Court, in addition to filing briefs of support for other states’ fights. We cannot allow activist judges and radical groups to erase protections that women and girls have fought for generations to secure.

Protecting Children

The Arizona Legislature defended the state’s lifetime registration and reporting requirements for convicted sex offenders, giving families and law enforcement greater abilities to track high-risk offenders. Despite the importance of the protections, Mayes failed to defend the law, abandoning the state’s responsibility to safeguard communities. However, we refused to allow the safety of our children to be jeopardized, and we recently won in federal court. The judge’s ruling in this case was a victory for every parent in Arizona.

Protecting the Second Amendment

The Arizona Legislature joined a national coalition to urge the U.S. Supreme Court to end Mexico’s frivolous lawsuit against U.S. firearm manufacturers for crimes committed by Mexican cartels in that country. Earlier this year, the Court agreed with our position, ruling that the lawsuit infringes on U.S. sovereignty by trying to impose restrictions on Second Amendment rights and to control how the American firearms industry is regulated. We were proud to work with other states to uphold our nation’s sovereignty, protect Americans’ right to bear arms, and safeguard lawful gun manufacturers from those attempting to destroy this industry. I will always engage in legal battles to protect our Second Amendment rights when Mayes refuses to do so.

Protecting Against Federal Land Grabs

Two years ago, the Biden-Harris administration confiscated nearly a million acres of land in northern Arizona, designating this space as a “national monument.” This unlawful designation will result in fewer jobs, diminished state trust land values, and billions in lost tax revenues. I sought to overturn this action in federal court to free our state from the grasp radical environmentalists had over the previous administration. As we argued throughout this case, Biden’s maneuver had nothing to do with protecting actual artifacts, but halting all mining, ranching, and other local uses of federal lands that are critical to our independence from adversary foreign nations, our food supply, and the strength of our economy.

Protecting America’s Energy

After the Arizona Legislature joined a national coalition to challenge a radical and costly rule imposed by California requiring trucking companies to retire their diesel-fueled models, the state agreed to repeal its ‘Advanced Clean Fleets’ mandate. This rule would have created dire impacts to the supply chain, raising costs for local trucking companies and their customers. For years, California has operated with near impunity as its leaders passed unconstitutional regulations that brought great harms to Arizona consumers. In the absence of our attorney general holding California accountable to the rule of law, the state Legislature gladly stepped up to protect our citizens from this egregious abuse of power and emerged victorious.

Warren Petersen is the President of the Arizona State Senate and represents Legislative District 14.