Canadian Prime Minister Justin Trudeau is to meet with US President Donald Trump in Washington on Monday. <br/><br/>A statement from the prime minister's office today says the leaders " look forward to discussing the unique relationship between Canada and the United States of America and how they will continue to work hard for middle-class Canadians and Americans, together."'<br/>'<br/>Trump has vowed to renegotiate the North American Free Trade Agreement with Canada and Mexico. Canada's foreign minister warned the Trump administration yesterday that his country will retaliate if the US applies new tariffs.<br/>