Engines hummed on the rain-slicked tarmac as Air Force One prepared for takeoff. Reporters watched from behind velvet ropes, tension thick in the air. Inside, aides moved briskly, checking manifests. One question echoed: Would Don Jr., Eric, or Jared Kushner be joining the President? At a press briefing, Deputy Press Secretary Mark Daniels, tie slightly askew, said, “I’m not tracking...