Iowa’s Republican Gov. Kim Reynolds on Thursday signed into law a bill that forbids biological males from playing girls’ sports. Even if some burly fellow insists that he is really a girl, he has to play on the boys’ teams if he is going to play at all. Nowadays, we have to pass laws in order to reassert the truth of what everyone knows, no matter what they may insist to the contrary, and to beat back the fantasies and wishful thinking that dominate the popular culture. Even worse, the Iowa law is certain to be controversial. Those who cling to their woke fantasies won’t give them up without a fight.