Ahhh, than Canada is an island? Last time I checked, many Americans were investing in business and resources in Canada. Heck, every time, lately, when I call a computer help line for assistance with hardware, I am hooked up with some operator in Canada!!!
When that money dries up, there may, or may not, be another pool of money which "they" can switch to. In the meantime, if I were you, I'd be open to the idea that the rest of the world economy DOES have an impact on Canada--albeit, it may be a delayed one, i.e. may take months or a year before you feel the real effect up there.
But hey, I am not a financial adviser--but if I were, I'd like to think I could do a better job than those which got us here!
Regards,
TA