President Barack Obama’s deputies have told the North Carolina Governor that all single-sex public bathrooms — including those in K-12 schools — must be opened to people of both sexes by Monday to prevent “discrimination” against the roughly 1-in-2,400 American adults who say they’re transgender. If the state doesn’t give up Americans’ right to decide who gets to use single-sex bathrooms and school locker rooms by Monday, then the federal government could start blocking the routine federal spending and tax transfers to the state — unless federal courts block the administration’s threat of sex-related harassment. “The Department of Justice has...