More than half of US states now ban transgender athletes from competing in women's and girls' sports, after a 6-3 Supreme Court ruling found those bans constitutional. Twenty states target transgender girls specifically; seven ban all transgender athletes. This is not protection, but a map of exclusion drawn around some of the most vulnerable young people in the country.

What the Supreme Court actually decided

On 30 June, the Supreme Court ruled 6-3 that state bans in Idaho and West Virginia do not violate the Constitution. The court also ruled unanimously that barring transgender girls and women from competing in women's and girls' sports does not violate Title IX, the federal law that prohibits sex discrimination in education. Idaho was the first state to pass such a law, back in 2020, and the rest followed.

A law designed to protect girls from sex discrimination has been read, by the highest court in the land, as justification for excluding a specific group of girls from sport altogether. I find that extraordinary. The law that was supposed to open doors has been used to close one.

What this looks like on the ground

The numbers in the WBAL-TV analysis are stark. More than half of US states. Twenty with laws targeting transgender girls on girls' teams. Seven going further and banning all transgender athletes from any team. Alaska, Nevada, Virginia and Wisconsin have no state legislation but have achieved the same effect through athletic association policy. The patchwork is almost complete.

And before the Supreme Court, there was an executive order from Donald Trump banning transgender women from competing in women's sports at schools and colleges. The NCAA followed with its own policy barring transgender women from women's competition. The pressure was coming from every direction at once.

The argument used to justify this

Supporters of the bans argue that transgender women have a biological advantage over cisgender women. It is the argument you hear everywhere, stated with great confidence, as though it settles the matter. I want to ask: which transgender women? At what stage of transition? With what hormone levels, for how long? Because the research does not support a blanket conclusion, and the policy does not reflect the nuance the science actually requires.

More than that: the conversation almost always lands on elite sport, on hypothetical Olympic scenarios, as though that is what is actually being decided. But the laws sweep up a thirteen-year-old girl who wants to run cross-country with her friends. She is not a threat to anyone. She is a child who loves sport, and she is now told, by law, that she does not belong.

What I keep coming back to

I keep thinking about what it is like to be that girl. To have trained, to have turned up, to have wanted nothing more than to be part of a team, and to have your state legislature decide that you are the problem. To watch the map fill up, state by state, each one adding its own version of the same message: not you. Not here.

Sport is not incidental to childhood. It is where friendships form, where confidence builds, where young people learn that their bodies can do remarkable things. Exclusion from it is not a neutral administrative decision. It is a message delivered to a child about her own worth, and she will hear it clearly.

What we should call this

I have heard the bans described as protecting women's sport. I have heard them described as a matter of fairness. They are a political project aimed at erasing transgender girls from public life, beginning with the most visible and communal spaces available to children. Sport was chosen because it is easy to frame, easy to misrepresent, and very difficult to defend against once the framing takes hold.

None of this makes sport safer for cisgender girls. None of it produces better athletes. What it produces is a country where a child can be legislated out of the one place that might have made her feel like she belonged.

The map is more than half full now. I hope people look at it and feel what I feel when I look at it, not satisfaction, not relief, but something closer to grief, and then the particular kind of determination that comes after grief.