Warren Petersen

Petersen, House Speaker Steve Montenegro, and a home-builders association sued the Arizona Department of Water Resources over 2024 groundwater-rule amendments affecting development in Phoenix and Pinal County.

March 10, 2025Opposes Environment and Public Health

Source: azleg.gov · researched July 13, 2026

Petersen prime-sponsored SB 1048 to repeal the governor's authority to close businesses during a declared state of emergency.

January 10, 2022Opposes Environment and Public Health

Source: azleg.gov · researched July 13, 2026

Petersen and House Speaker Ben Toma sent the National Association of Attorneys General a litigation-hold letter over its custody, investment, and expenditure of public-settlement money.

March 1, 2023Supports Anti-Corruption

Source: azleg.gov · researched July 13, 2026

Petersen, T.J. Shope, and John Kavanagh filed an SB 1487 complaint asking the Arizona Attorney General to review Pima County's policy restricting federal immigration enforcement use of county property.

April 6, 2026Supports Immigration

Source: azsenaterepublicans.gov · researched July 13, 2026

Wrote a bill ordering every Arizona police agency to sign a cooperation agreement with federal immigration enforcement by January 2026 (Senate Bill 1164). The governor vetoed it in April 2025.

January 23, 2025Opposes Immigration

Source: azleg.gov · researched July 13, 2026

Wrote a bill barring Arizona cities, towns, and counties from requiring a building permit for an international boundary wall built on or beside the border with the landowner's written consent (House Bill 2084, 2020). The House passed it, but the Senate never took a final vote, so it did not become law.

January 13, 2020Supports Immigration

Source: azleg.gov · researched July 13, 2026

Petersen filed an appellate brief defending Arizona's lifetime registration and online-identifier reporting requirements for convicted sex offenders.

April 13, 2026Supports Public Safety and Crime Control

Source: azsenaterepublicans.gov · researched July 13, 2026

Petersen petitioned the U.S. Supreme Court to review a Ninth Circuit ruling that blocked parts of Arizona's documentary proof-of-citizenship voting law.

February 19, 2026Supports Election Integrity

Source: azsenaterepublicans.gov · researched July 13, 2026

Petersen and House Speaker Steve Montenegro filed an Arizona Supreme Court amicus brief arguing that the Elections Procedures Manual must comply with Administrative Procedure Act notice-and-comment requirements.

September 22, 2025Supports Election Integrity

Source: azleg.gov · researched July 13, 2026

Petersen and House Speaker Ben Toma obtained a Superior Court ruling invalidating provisions of the 2023 Elections Procedures Manual governing voter registration, petition circulators, and county canvassing.

December 19, 2024Supports Election Integrity

Source: azleg.gov · researched July 13, 2026

Petersen and House Speaker Ben Toma challenged voter-approved Proposition 211's campaign-donor disclosure framework; a Superior Court judge denied their request for a preliminary injunction.

December 29, 2023Opposes Election Integrity

Source: apnews.com · researched July 13, 2026

Petersen offered an adopted Senate floor amendment to HB 2243 requiring voter-registration cancellation after confirmed death, nonresidency, or noncitizenship, with notice procedures.

June 22, 2022Supports Election Integrity

Source: azleg.gov · researched July 13, 2026

Sponsored a bill letting public-school students leave campus during the school day for religious classes with a parent's written consent, with providers covering transportation and costs. The Legislature passed it and Governor Katie Hobbs vetoed it on June 19, 2026 (Senate Bill 1741).

June 11, 2026Supports Civil Rights

Source: azsenaterepublicans.gov · researched July 13, 2026

Petersen and House Speaker Ben Toma filed an amicus brief seeking to preserve Arizona's statutory prohibition on gender-reassignment surgeries for minors during litigation over state health-plan coverage.

July 10, 2023Opposes Civil Rights

Source: azleg.gov · researched July 13, 2026

Co-sponsored a bill expanding Arizona's religious-freedom law so people could challenge rules that apply to everyone, not only rules aimed at religion. The House passed it 33-27, and it did not become law (House Bill 2153, 2014).

January 22, 2014Supports Civil Rights

Source: azleg.gov · researched July 13, 2026

Petersen prime-sponsored SB 1786 requiring providers of public artificial-intelligence tools to embed content-verification information in generated or materially altered content.

February 5, 2026Supports Corporate Accountability

Source: azleg.gov · researched July 13, 2026

The NFIB Arizona PAC endorsed Petersen for Arizona attorney general.

June 17, 2026

Source: nfib.com · researched July 13, 2026

Center for Arizona Policy Action and its political action committee endorsed Petersen for Arizona attorney general.

April 23, 2026

Source: azaction.org · researched July 13, 2026

Petersen and House Speaker Steve Montenegro issued a joint statement opposing a federal receivership over Arizona prison health care and supporting the state corrections department's appeal.

February 27, 2026

Source: azleg.gov · researched July 13, 2026

Petersen was the sole introducer of Senate Bill 1529, requiring Arizona cities to create standard preapproved home design plans covering small single-family homes, duplexes, triplexes, and accessory dwelling units. The governor signed the bill on July 1, 2025.

February 10, 2025

Source: azleg.gov · researched July 13, 2026

Arizona Senate Republicans selected Petersen to remain Senate president for a second consecutive term.

November 12, 2024

Source: azsenaterepublicans.gov · researched July 13, 2026

Petersen prime-sponsored SB 1343 to require periodic review and automatic expiration of state agency rules unless renewed.

January 30, 2024

Source: azleg.gov · researched July 13, 2026

Sponsored a law letting Arizona cities and towns approve site and development plans without a public hearing, and let architects and engineers self-certify code compliance (Senate Bill 1103).

January 19, 2023

Source: azleg.gov · researched July 13, 2026

Petersen prime-sponsored HB 2569 recognizing qualifying out-of-state occupational licenses for new Arizona residents.

February 4, 2019

Source: azleg.gov · researched July 13, 2026

Cosponsored the law requiring Arizona high school students to correctly answer at least 60 of 100 questions from the U.S. citizenship civics test in order to graduate, starting in the 2016-17 school year. The governor signed it on January 15, 2015 (House Bill 2064).

January 12, 2015

Source: azleg.gov · researched July 13, 2026

Warren Petersen joined as a prime sponsor of HB 2608, which closed the Elected Officials' Retirement Plan to new members and created a defined-contribution option for newly elected officials.

February 12, 2013

Source: azleg.gov · researched July 13, 2026

As Senate president, Petersen and House Speaker Ben Toma formed a six-member Joint Legislative Study Committee on Water Security.

April 11, 2023

Source: azleg.gov · researched July 13, 2026

After a legislative hearing aired unsupported bribery allegations against public officials, Petersen and House Speaker Ben Toma publicly disavowed the claims and blamed the presenter.

February 28, 2023

Source: apnews.com · researched July 13, 2026

Petersen prime-sponsored SB 1459 providing de novo court review of administrative decisions and allowing courts to decide legal and factual questions without agency deference.

January 28, 2021

Source: azleg.gov · researched July 13, 2026

Wrote a bill letting any person ask Arizona's rule-review council to look at an agency practice, rule, or licensing requirement they believe is overly burdensome or not allowed by law (Senate Bill 1273).

January 23, 2018

Source: azleg.gov · researched July 13, 2026

Was lead sponsor of Senate Bill 1072, letting Arizona judges who review a state agency decision rule on the facts and the law themselves, rather than deferring to what the agency decided. The governor signed it on May 22, 2017 (Chapter 329).

January 17, 2017

Source: azleg.gov · researched July 13, 2026

Petersen prime-sponsored SB 1487 establishing Attorney General review and fiscal penalties when a local government violates state law.

February 2, 2016

Source: azleg.gov · researched July 13, 2026