Supreme Court Sanctions Transgender Athlete Ban, Redefining Equality Through Exclusion -By Fransiscus Nanga Roka

The US Supreme Court has issued a ruling that could interpret equality out of modern constitutional law and restrict who can claim the right to it. The Court has used a much more troubling logic to uphold state bans on trans athletes competing in girls’ sports: exclusion is justified in the name of fairness.

The ruling is at the core a pair of laws heigh­tedly out of Idaho and West Virginia requiring that school and college sports groups essentially be separated by biological sex at birth. The Court ruled these limitations 6–3 permissible on the basis of the Fourteenth Amendment and unanimously to reverse under Title IX. In the majority opinion, Justice Brett Kavanaugh wrote that “gender-based differences are not arbitrary” but rational and reasonable based on objective biological differences shown in athletic competition and vital to fairness and safety.

At face value, the argument seems rooted in common sense. However changing the reasoning is a much bigger change: It would institutionalize biological determinism as a constitutional theory to deny civil rights. The Court does so by interpreting a provision that, as I try to explain in the book, identifies personhood based on immutable biological categories, so there are deep questions about how we are understanding law and personhood in the 21st century.

Those in favor of the transgender athlete ban frame the ruling as a long-overdue defense of female athletics. They contend that those who identify as female but were born male have inherently unfair advantages over women in competitions. But this view misses a crucial fact: there is biological diversity among cisgender athletes as well. Natural variation has always been part of the equation with elite sports: height, hormone levels, muscle composition.

The effect of also mistaken reasoning would be to misuse state power over bodies — quite intrusive and legally unclear. If you wish to level, by biologically defining fairness, what will the standards of eligibility be? Hormone thresholds? Genetic testing? Physical assessments? The ruling does not answer these questions, but implicitly justifies stricter levels of regulation.

It is a stark reversal for LGBTQ+ advocacy. But they assert that the Court has failed in its duty: to protect minority rights from majority overreach. The exclusion reinforces a larger message with respect to transgender women—that our existence is diminished in public life. It is not simply a camp for sports but instead shows commitment to acceptance.

It goes beyond the U.S. borders Supreme courts the world over as arguably the most influential court in the world, are seen to have quite strong normative signals on other jurisdictions. Another offering legal framework for countries with similar debates is that this decision, in itself, could be an acceleration of a global tendency towards more restrictive gender policies in sport and beyond.

This ruling formalizes the legality of similar bans already enacted in more than twenty US states. The outcome is a patchwork of rights, where access to participation is based not only on identity but geography.

The key question is never quite answered: can equality be saved through sharper lines of exclusion? To which the Supreme Court has replied yes. But history shows that when the law defines fairness by who it excludes, it jeopardizes the justice that it is meant to uphold.

Fransiscus Nanga Roka

Faculty of Law University 17 August 1945 Surabaya and Managing partner  Law Firm Victorious Indonesia