Sen. J.D. Vance has introduced legislation that would make gender-reassignment treatments for minors a federal crime. Mr. Vance’s bill, the Protect Children’s Innocence Act, would ban gender-transition surgeries, puberty blockers, hormone treatments and other transgender-related medical care from being provided to minors. People that administer gender-change treatments to children would be charged with a federal class C felony, which carries a sentence of 10 to 25 years in prison. The bill prevents federal funding from going toward transgender surgery or treatments, including blocking Affordable Care Act insurance plans from paying for the procedures. Mr. Vance’s measure would also ban universities...