In a shocking revelation that has stirred up the White House press corps, questions are mounting about whether President Joe Biden's mental fitness was misrepresented to the American public. The new book, "Original Sin: President Biden’s Decline, Its Cover-Up, and His Disastrous Choice to Run Again," by CNN's Jake Tapper and Axios reporter Alex Thompson, has reignited concerns about Biden's cognitive abilities while in office, suggesting a deliberate cover-up by the Biden administration…