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Arizona House Republicans Submit Amicus Briefs to Supreme Court in Transgender Athlete Cases

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Published on September 20, 2025
Arizona House Republicans Submit Amicus Briefs to Supreme Court in Transgender Athlete CasesSource: Unsplash/ Austris Augusts

Arizona House Republicans have stepped into the legal arena, filing amicus briefs with the U.S. Supreme Court in a pair of high-profile cases centered on the participation of transgender athletes in women’s sports. The move, announced by Arizona House Speaker Steve Montenegro, comes as the cases, Little v. Hecox (Idaho) and West Virginia v. B.P.J., are set to be argued this fall. According to a statement acquired by the Arizona Legislature's press, the briefs advocate for states' ability to limit participation in girls' sports to biological females in the interest of maintaining competitive fairness, safety, and equality.

The Arizona legislature enacted the Save Women's Sports Act in 2022, but the law was challenged in court. Despite the Ninth Circuit acknowledging Arizona's substantial interests, two transgender athletes remain unaffected by the Act due to federal injunctions. Legislative leaders, demonstrating a willingness to directly engage—and to now stubbornly urge—the nation's highest court to rule in favor of their stance, are acting in the absence of support from Attorney General Mayes, who declined to defend the law. According to the Arizona House, as Speaker Montenegro put it, "It's unacceptable that our state’s top lawyer refuses to defend that law. While Attorney General Mayes stands aside, House Republicans are doing the job she won’t—standing up for Arizona’s daughters and every female athlete who trains and competes."

The filed briefs support the preservation of female-only categories in sports, a standpoint that has stirred significant debate nationwide. According to the Arizona House, the Arizona briefs underline the alleged negative impact that the injunction has had on female athletes, documenting losses in placements, roster spots, and playing time. Montenegro emphasized the core of their argument, stating, "Girls deserve a level playing field." The Republicans' push for Supreme Court intervention not only highlights ongoing disputes over transgender athletes' rights, but it also raises broader questions about the role of elected legislatures versus athletic bodies in setting policies.

With the cases garnering national attention, both supporters and opponents of the Arizona law are gearing up for the upcoming Supreme Court term. The legislative leaders behind the briefs assert a need for uniform standards, especially where medical and scientific disputes emerge. In their view, the courts should tend to defer to the decisions made by those elected to represent the people. "The Ninth Circuit sidelined our law; I’m confident the Supreme Court will correct course and affirm what parents and coaches know: girls’ sports are for girls," Montenegro insisted, indicating a sharp determination to see their objectives meet the backing of judicial power, according to the Arizona House.

Steve Montenegro represents Legislative District 29, serving the West Valley, Goodyear, and Surprise areas. He and his caucus are betting that their appeal to the Supreme Court will help overturn the current legal challenges to the Save Women's Sports Act. As the battle lines are drawn in courtrooms, a nation watches, awaiting the Court's response to a question that extends beyond the fields and courts: Who gets to decide the rules of the game?