David Cay Johnston, one of Donald Trump’s biographers, wrote for The New Republic on Monday that the hefty fine in the New York fraud case is of the former president’s own making. According to Johnston, Trump made bad — and expensive — deals as he built his defense. And they came back to bite him. The biographer cited Judge Arthur Engoron’s ruling, which included a statement that every witness Trump’s legal team put on the stand “lacked credibility, and many outright lied.” While Trump’s allies in the legal world, including lawyer Jonathan Turley, claim he was a victim of “selective prosecutio…