The Biden administration wants to fight this discrimination using the federal law known as Title IX, but Republican-dominated states are trying to stop the move.
By the standards of modern day Republicans, boys would never have been allowed to have long hair, and girls wouldn't be allowed to wear pants.
Republicans are contrarians to everything normal people would call progress.
Biden could release a PSA asking people not to jump off of cliffs onto sharp rocks, because Gravity is real and it would be dangerous. Republicans would campaign on a pro-sharp-rocks policy saying it's your right to jump off of a cliff if you want to, and the new right-wing meme would be photos of people posed as corpses on piles of rocks.