The Supreme Court has shifted the national fight over transgender athletes back to state capitols, school boards, governors’ offices, and athletic associations. The justices upheld laws in Idaho and West Virginia that bar transgender girls and women from competing on female school sports teams. The ruling does not automatically create a national ban, but it gives states strong legal cover to keep or pass restrictions tied to biological sex in girls’ and women’s sports.
That is why the spotlight has now moved to the 23 states that still do not have a state law banning transgender athletes from girls’ and women’s sports. Fox News data shows 27 states already have such laws, while 23 do not. Of those 23, 19 currently allow transgender athletes to participate under gender identity policies, while four rely on athletic associations or education agencies to impose restrictions without a formal state law.
What the Supreme Court Actually Decided
The Court’s decision centered on two state laws: Idaho’s Fairness in Women’s Sports Act and West Virginia’s Save Women’s Sports Act. Both laws classify school sports participation according to biological sex and bar students assigned male at birth from competing on girls’ and women’s teams. Reuters reported that the justices unanimously rejected the Title IX challenge, while the Court split 6-3 on the Equal Protection question under the Fourteenth Amendment.
Justice Brett Kavanaugh wrote the majority opinion. In that view, states may preserve separate female athletic categories based on biological sex to ensure competitive fairness and safety. The ruling gives legal force to states that have already enacted restrictions and signals to states without such laws that they now have more room to act if their legislatures choose to do so.
Still, the decision does not force every state to adopt a ban. That distinction matters because states such as California, Illinois, New York, Massachusetts, Oregon, Washington, and Vermont can continue defending inclusive policies unless another legal challenge or federal action changes the landscape. Civil rights groups in Illinois and Massachusetts emphasized that, after the ruling, the Court allowed bans but did not require them.
Why the 23 States Are Now Under Scrutiny
Before the ruling, governors and athletic associations could point to pending litigation as a reason to wait. That shield is now weaker because the Court has made clear that states may pass laws restricting transgender participation in girls’ sports without automatically violating Title IX or the Constitution. That means the debate is no longer only about what courts will allow. It is now about what elected officials, school systems, and voters are willing to support.
California is one of the clearest examples. The state has long protected transgender students’ right to participate in school programs and athletic teams consistent with their gender identity under AB 1266. Accordingly, Gov. Gavin Newsom’s office told Fox News Digital that the Supreme Court ruling does not affect California’s current laws and that the state remains committed to protections for LGBTQ Californians.
Illinois has also signaled resistance to the new legal direction. The Illinois High School Association handles participation through a policy that allows students to compete consistent with their gender identity after submitting documentation through their school. Likewise, Gov. JB Pritzker criticized the ruling as a setback for equality and said LGBTQ students still have a place in Illinois.
Some Governors May Move in the Opposite Direction
Nevada shows how the ruling could energize states without current legislation. Republican Gov. Joe Lombardo said the decision gives legal clarity and strengthens his push for lawmakers to address the issue during the 2027 legislative session. In his view, female athletes deserve a level playing field, and Nevada should settle the question through state law rather than leaving it unresolved.
Colorado may also become a major battleground. The state currently protects transgender student-athletes’ ability to compete on teams that align with their gender identity, but voters are expected to decide a November 2026 ballot measure that could require teams to be based on biological sex. As a result, Colorado is one of the most important states to watch after the ruling.
Minnesota and Maine are already in the legal crossfire. Minnesota’s high school league uses a case-by-case policy rather than a blanket ban, while Maine allows students to compete on teams matching their gender identity under broader human rights protections. Both states, however, have drawn attention from the Trump administration’s Justice Department over their policies.
The Divide Between Law and Athletic Policy
One of the most important details in the Fox News data is the difference between a state law and an athletic association rule. For example, Pennsylvania, Wisconsin, Alaska, and Virginia do not have full state bans written into law, but they have restrictions through education departments or school athletic associations.
In Pennsylvania, the state athletic association changed its policy in early 2025, removing its previous transgender policy and shifting its mixed-gender participation rules toward biological sex for federally funded schools. Wisconsin’s athletic association also updated its eligibility policy in 2025 to allow only students designated female at birth to compete in girls’ competitions.
Alaska has a high school sports policy barring transgender girls from girls’ teams, even without a formal state law. Similarly, Virginia lacks a legislative ban, but its Department of Education model policies require student sports participation based on biological sex at birth, with enforcement largely left to school districts.
That split creates a practical problem. A law is harder to reverse than an association policy. A policy can change after board elections, administrative pressure, lawsuits, or threats of federal funding cuts. A law requires legislative action, a governor’s signature, or a court ruling. After the Supreme Court decision, conservative lawmakers may try to turn association-level restrictions into permanent statutes.
Supporters and Opponents See Two Different Americas
Supporters of bans argue that girls’ and women’s sports need firm sex-based categories to preserve fairness, safety, scholarships, records, and competitive opportunities. In that view, West Virginia officials and conservative legal groups celebrated the ruling as a victory for female athletes and for states’ authority to draw sex-based lines in sports.
Opponents see the ruling differently. Transgender rights advocates argue that the bans exclude a small and vulnerable group of students from school life, stigmatize transgender youth, and invite intrusive questioning of young athletes’ bodies. For that reason, the ACLU and other advocacy groups condemned the ruling and said they would continue fighting for transgender students’ access to school sports.
What Happens Next
The next phase will likely unfold state by state. In blue states, governors may defend existing inclusive policies and dare federal officials or private plaintiffs to challenge them. In red or purple states without bans, lawmakers may introduce new legislation, citing the Supreme Court decision as evidence that such laws can withstand legal review. Each state now faces its own decision about whether to defend current rules or change them.
For families, schools, coaches, and student-athletes, the result is a fractured national map. In one state, a transgender student may be eligible to compete; in another, the student may be barred. A school district may follow one rule under state law, another under athletic association policy, and a third under federal pressure.
The Supreme Court may have answered one constitutional question, but it did not end the political fight. Instead, it pushed the battle closer to home, where the next decisions will be made in governors’ offices, statehouses, school gyms, athletic boardrooms, and ballot boxes across the country.
