Reuters/Jonathan Ernst Secretary of State Rex Tillerson and national security adviser H.R. McMaster reportedly locked horns with White House senior adviser and President Donald Trump's son-in-law, Jared Kushner. Kushner reportedly pursued a freewheeling diplomatic outreach to other world leaders, sometimes pursuing private conversations that sidestepped normal channels of communication. His methods apparently did not sit well with Tillerson and others. Secretary of State Rex Tillerson and national security adviser H.R.