Richie Diesterheft / Wikimedia Commons
Why It Matters
Idaho stood at the center of a landmark Supreme Court ruling that will shape athletic competition policy across the country. The decision validates Idaho’s 2020 law — the first of its kind in the nation — and clears the legal path for similar statutes in more than two dozen other states to remain in force.
What Happened
The U.S. Supreme Court ruled Tuesday that state laws prohibiting transgender athletes from competing on women’s and girls’ sports teams are constitutional. The decision upheld bans enacted by Idaho and West Virginia, vindicating Idaho’s pioneering 2020 statute after years of legal challenges had kept it largely blocked from taking effect.
Justice Brett Kavanaugh authored the majority opinion. The court split 6-3 on the central constitutional question, finding that the bans do not violate the Equal Protection Clause of the 14th Amendment. On the separate Title IX question, the ruling was unanimous — all nine justices agreed that the federal education law does not prevent states from enforcing such bans.
The three liberal justices agreed on the Title IX conclusion but dissented on the equal protection issue.
Kavanaugh’s majority opinion drew a clear distinction between policy and law: “Whether biological males may participate on women’s and girls’ sports teams may be a debated policy question. But the legal question for Title IX purposes is whether West Virginia may limit women’s and girls’ sports teams to biological females.”
Background on the Cases
Idaho passed its ban in 2020, making it the first state in the country to enact such a restriction. Transgender athlete Lindsay Hecox sued that same year, and a federal district court blocked the law before it could take effect. A federal appeals court upheld that injunction in 2023, then narrowed its scope in 2024 to apply only to Hecox. Idaho appealed to the Supreme Court in July 2024.
West Virginia enacted its own ban in 2021. Becky Pepper-Jackson’s mother filed suit on her behalf the same year. A federal appeals court barred West Virginia from enforcing its law in 2024, prompting the state to seek Supreme Court review. The high court agreed to hear both cases together and held oral arguments in January.
A federal judge in Idaho had previously rejected Hecox’s attempt to withdraw from the case, keeping the Idaho matter alive for the Supreme Court to resolve.
By the Numbers
- 6-3 — Supreme Court vote on the Equal Protection Clause question
- 9-0 — Unanimous finding that Title IX does not block state-level transgender athlete bans
- 26 — Other states with similar laws now on firmer legal ground
- 2020 — Year Idaho enacted the first such law in the nation
- 1972 — Year Title IX was enacted, the federal law at the heart of the legal dispute
Zoom Out
The ruling has national reach. At least 26 additional states have enacted comparable laws, and Tuesday’s decision effectively insulates them from the same constitutional challenges that tied up Idaho’s statute for years in lower courts. The International Olympic Committee and the NCAA have both adopted similar policies restricting competition by biological sex.
Idaho Republican Rep. Barbara Ehardt, a longtime champion of the legislation, reacted forcefully to the news: “Opportunities for girls and women should never be confused with male feelings!”
The decision arrives as the broader debate over fairness in women’s sports has moved from state legislatures to the highest court in the land — and now, with a definitive ruling, back to the states to implement without legal interference.
What’s Next
With the injunctions lifted, Idaho’s 2020 law can now be fully enforced for the first time since its passage. West Virginia’s ban is similarly cleared for enforcement. Legal observers expect other states currently defending similar laws in lower courts to cite Tuesday’s ruling in pushing for dismissal of pending challenges. Congressional observers will also watch for any effort to codify the ruling’s framework at the federal level.
About the Author
