The USA has NEVER been a good partner to Canada.  The USA has always treated Canada as sub-servant to it's interests.  Just look at the "Avro Arrow" where Canada had developed a far superior fighter at the time and what happened. The Canadian government folded and destroyed all the development program, test products and history.  A pathetic decision by Canadian leaders at the time.  The time has come for Canada to deal with the world with urgency and treat the USA as just another opportunity.  Time for more than one customer for Canada.