In his new book, Donald Trump threatens billionaire and Facebook founder Mark Zuckerberg with prison. Save America, set to be published next week, includes a photograph of Zuckerberg and Trump at the White House. Underneath the photo, Trump wrote that Zuckerberg “would come to the Oval Office to see me” and “bring his very nice wife to dinners, be as nice as anyone could be, while always plotting install shameful Lock Boxes in a true PLOT AGAINST THE PRESIDENT.” Trump went on to pin some of his election conspiracies on Zuckerberg, and gave him a serious warning. “He told me...