Longtime deputy to Robert Mueller and key Trump-Russia investigator Andrew Weissmann is in the crosshairs of federal prosecutors. For years, Andrew Weissmann was one of the most visible and vociferous critics of Donald Trump, as a former deputy to Special Prosecutor Robert Mueller and MSNBC legal analyst who wrote a book wondering if the president “paid bribes to foreign officials,” or had “Russian business deals in the works” when he ran for president. Now Weissmann is facing hard questions of his own, about eerily similar themes. In a pair of letters obtained by Racket, District of Columbia U.S. Attorney Ed...