Jennifer Bilek With Jonathon Van MarenFor the first time in a decade, the seemingly invincible transgender movement is on the run. In the United States, the Trump administration is purging gender ideology from government institutions and issuing a string of executive orders targeting everything from sex change surgeries for minors to LGBT indoctrination in schools. Europe’s medical institutions—in Norway, Finland, the United Kingdom, Sweden, and France—are pushing back against “gender...