US tariffs on all cars and trucks, automotive parts and steel would be increased to 50 per cent starting January 1 next year, President Donald Trump said in a social post on Monday after trade talks with Canada collapsed over the weekend.“Build in the U.S. and there are ZERO TARIFFS. Canada will be treated like a State no longer!” Trump wrote.“On Trade, and in other ways, also, they are among the worst Nations in the World to deal with. They feel entitled, and yet, WE DON’T NEED CANADA,...