The more Rep. Devin Nunes was attacked, the more he wanted to understand what was behind the Russia collusion narrative. His opponents couldn't have been more wrong in how to contain him.In early December 2016, Devin Nunes was growing suspicious.The political and media establishment, still struggling to cope with the news of Donald Trump’s victory, was beginning to claim that Russian cyber meddling explained the surprising outcome. On Dec. 9, 2016, big media outlets such as the New York Times and Washington Post began laying out the contours of what would become the dominant and relentless media narrative of the...