The co-founder of the opposition research firm behind the Trump dossier testified to Congress earlier this month that he believed Russian operatives have infiltrated the National Rifle Association. Glenn Simpson, a founding partner of Fusion GPS, casually suggested in an interview with the House Permanent Select Committee on Intelligence that the gun rights group had been breached, a source familiar with the matter told The Daily Caller. Fox News first reported about Simpson’s testimony on Tuesday night. TheDC’s source said that Simpson suggested the NRA-Russia connection in response to a line of questions from committee Democrats who asked whether any...