“Gender-affirming care,” including blocking a child’s puberty, giving them cross-sex hormones, and performing surgeries on their bodies, is life-saving, according to the American Medical Association, the American Academy of Pediatrics, the news media, Democrats, hospitals, progressive activists, and Hollywood celebrities. For decades, the most powerful people and institutions in America have said that if a child feels like they are the opposite gender, they are, and doctors should be allowed...