Our economy is small compared to the US.  Our population is also only 30 million compared to 300 millio people in the US.   If america first means US economy wakes up and grows then its can only be good for canada.   The economist are all putting down the worst case scenario.  The North American Free trade moved the HIgh tech jobs out of Canada...to low labor or almost slave labor cost markets.  What good is a trade when we move everything out and you end up with no money to buy anything.   In any case,  Canada has leverage against US,,,,we supply them energy.  In addition,  we we not better off before the free trade withe US. 
What this will do is create an environment of cooperation when they realised they can no longer take advantage.  The free trade deal opened raw resource sector in Canada to the weathy corporation.  I do not even believe that we get a good portion or our share from this.  Tell we how we can be a major gold producer and still have no gold reserves.