The publication of a House Republican memo alleging surveillance violations in the Russia probe has prompted President Trump to declare that he is “totally” vindicated. As many have pointed out, that is not true... That said, the memo is not necessarily the disaster for Trump and the Republicans that it is widely considered to be. Many of Trump’s political opponents remain tethered to the eventual emergence of proof that his campaign colluded with the Russian government in order to win the presidency. But the evidentiary basis so far for Russiagate is thin, to say the least. Meanwhile, the relentless pursuit...