FILE- In this March 17, 1985, file photo, Canadian Prime Minister Brian Mulroney and U.S. President Ronald Reagan hold their first round of talks in Quebec City, Quebec. When Reagan visited Canada, he was so friendly with then Prime Minister Brian Mulroney they sang a song together. When President Donald Trump visits this week there's speculation he could walk out of meetings with allies furious over his belligerent trade policies. (AP Photo/Scott Applewhite, File)