Key Democrats revealed new legislation Friday that would strip former President Donald Trump of his Secret Service agents if he is convicted and sentenced to prison. Rep. Bennie G. Thompson, the top Democrat on the House Homeland Security Committee, said it’s about making sure Mr. Trump doesn’t get special treatment for whatever crime he might be sentenced. He is worried that having to accommodate a Secret Service protective detail could lead to accommodations for a former president. “It is regrettable that it has come to this, but this previously unthought-of scenario could become our reality,” the Mississippi lawmaker said. “Therefore,...