Economy Trump slams Canada over NAFTA, says rejected Trudeau meeting Updated : September 27, 2018 10:10 AM IST The remarks by Trump, who repeated a threat to impose tariffs on Canadian autos, knocked the Canadian dollar down to a one-week low against the US greenback . The attack cast further doubt on the future of the three-nation North American Free Trade Agreement, which underpins $1.2 trillion in annual trade between Canada, Mexico and the United States. Trump, who wants major changes to the 1994 treaty, has already concluded a text with Mexico and is threatening to leave out Canada unless it signs up by this Sunday. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.