Eddie Goldenberg comments in the National Post on how the lines of communication traditionally work between officials in the Prime Minister’s Office and the White House—and how they appear to be working under the Trump presidency. Eddie says that in the past, calls between the American president and the Canadian prime minister were always organized in advance, but “there is nothing normal about this White House.”  ‘Very unusual’ for White House to try using Trudeau to influence Trump, say observers, but ‘expect more’