Hopefully the US will tell Canada to take its "Right to work" abolition demands and inject them solidly up their socialist butts. What this has to do with trade is beyond imagination. It is a political message sent by the lefties. IMHO The US should respond with demands that Canada must have Universal "Right to work"  in order for it to consider Canada a trading partner under the deal. Canada would be a better place to live with a greater ability to support its indulgent social agenda if the Unions did not have such an unfair stranglehold on our society.