There are no subsidies. The reason trump is picking on Canada is because he desperately needs a tick in the win column and he sees Canada as an easy mark.
I hope my government will realise having so many of our eggs in the US basket can be detrimental to our economy in the instance of a really bad US president. If anything trump has shown is we need to strengthen economic bonds with other trading partners and lessen economic bonds with the US.
You should go somewhere else, but you won't, because you can't.