While Canadian dollars and US dollars isn't always close to each other, it is still close currencies in my opinion. After all, Canada is not that far of United States, they have contracts and exchanges with United States, it's the same language and there's some cultural shares between them. Not so surprising. Still, Canada still kept their own dollars, while some countries not so close of United States are already under the USD currency. So, what are the benefits of Canada of this currency? What are they trying to do with it right now, in 2015? Also, with USD who got stronger, CAD/USD currency got a tremendous value difference that never happened in the past 10 years. What's the effect of this stronger US dollar?