President Biden inadvertently disclosed Tuesday that one of his granddaughters works for billionaire former New York Mayor Michael Bloomberg, who briefly was one of his Democratic primary rivals. Biden made the revelation during a press conference in Glasgow, Scotland, when he called on reporter “Jen Epstein of the Wall Street Journal” to ask him a question. Epstein corrected the president that she works for Bloomberg News, which is owned by the financial entrepreneur, who was mayor from 2002 to 2013. “Excuse me. I beg your pardon,” Biden told Epstein. “I hope — I got it. I got it, especially since...