Nobody told us.

Our family was still celebrating the great accomplishment of our oldest daughter, Adaleia. She had made her middle-school track team and was competing in the sports in which we’d once competed: shot put and discus.

We were buying equipment, working on her form, laughing as her practice throws made more and more dents in the backyard. She was so excited, and we were happy for her.

What we didn’t know was that her school was allowing a biological male (referred to as B.P.J.) to compete on her team and change in the girls’ locker room. That was supposed to be illegal, because girls’ sports were protected under West Virginia’s Save Women’s Sports Act.

As we came to find out, a federal appellate court had stopped the law from going into effect while a lawsuit involving transgender athletes was ongoing.

On Jan. 13, the U.S. Supreme Court heard arguments in this........

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