Richard Grenell and Lee Smith among those stoking doubts that Mueller wrote opinion piece

Republicans and other right-wing figures amplified the claim that former special counsel Robert Mueller did not write an opinion piece Saturday defending his Russia investigation.

Social media chatter over the weekend echoed speculation that followed Mueller’s halting testimony before Congress one year ago, at which time there were suggestions that the septuagenarian former FBI director did not even write his 448-page report on the investigation into Russian interference in the 2016 election.