In a surprise move, the Trump administration on Thursday sided with a Colorado bakery whose owner is arguing to the Supreme Court that he should not need to bake a cake for a same-sex couple when their ceremony violates his religious beliefs. Colorado's public accommodation law bans discrimination based on sexual orientation, and its courts have ruled that means businesses catering to the public cannot discriminate against same-sex couples seeking services for weddings or other commitment ceremonies. Masterpiece Cakeshop, however, is run by Jack Phillips, a man who incorporates his Christian faith into the way he runs his business. Baking...