Presidents don’t win fights with the FBI. Donald Trump apparently wants to learn this lesson the hard way. Most presidents have had the sense not to bully the FBI by defaming its leaders and — ridiculously — painting its agents as leftist political hacks. Most members of Congress have also understood how unwise it would be to pull such stunts. But Trump and his hapless henchmen on Capitol Hill, led by Rep. Devin Nunes (R-Calif.), have chosen the wrong enemy. History strongly suggests they will be sorry. (snip) Trump and his minions seem to think they can out-leak the FBI. Obviously...