Republican legislators and interviewers challenging the president’s son on the House majority’s behalf would throw out an allegation, often one that’s been worn smooth after tumbling around in the right-wing media universe for the past year or two. And Biden would invariably swat it away, stripping off the layers of innuendo that had been applied by Donald Trump and Oversight Committee Chairman James Comer (R-Ky.) or Judiciary Chairman Jim Jordan (R-Ohio) or any of myriad Fox News commentators.