You know...this softwood ransom bs with the US hads gone on for a decade. Posturing by politicians both sides has got us nothing. 
I say hard line in the woods... you want to litigate go litigate... US . 
And we should have long before now found other more lucrative international markets for our lumber. 
Let them build houses with green, soft, unseasoned, young Oregon softwood and see how that works. I can hear the US lawyers gearing up for a class action on behalf of home owners and builders now.
Fact is our lumber is better ....but they want to sell domestic lumber at higher prices to their citizens...maybe we should just let them... ?
C'mon Canada lead with your chin and then your fists...