This, from Bloomberg News, is the kind of scrutiny that you draw when you start getting taken seriously as a presidential candidate: Republican presidential candidate Newt Gingrich said during a Nov. 9 debate that he earned a $300,000 fee to advise Freddie Mac as a “historian” who warned that the mortgage company’s business model was “insane.” Former Freddie Mac officials familiar with the consulting work Gingrich was hired to perform for the company in 2006 tell a different story. They say the former House speaker was asked to build bridges to Capitol Hill Republicans and develop an argument on behalf...