Just days after the US Commerce Department imposed duties averaging 20% on Canadian softwood lumber, accusing Chinese timber companies of getting an unfair government subsidy, on Thursday round two of the trade war between the US and Canada broke out when Boeing asked the U.S. Commerce Department to investigate dumping, subsidies and unfair pricing for Canadian planemaker Bombardier’s new CSeries airplane, a competitor to the Boeing 737, confirming that the trade tensions between the two neighboring countries are set to get far worse.