The United States and Canada have the largest trade relationship in the world.[1] In 2012, U.S. merchandise trade with Canada consisted of US$324.2 billion in imports and US$292.4 billion in exports.[2] The trade relationship between the two countries crosses all industries and is vital to both nations’ success as each country is the largest trade partner of the other. http://en.m.wikipedia.org/wiki/Canada–United_States_trade_relations