[Former Proud Canadian]

I think it is more basic. Canada is a first world capitalist democracy. A successful nation that is not afraid to exploit its resources, support Israel, and tweak dictators. As such, it is a bit of a threat to Obama's world view.

I think you are correct in that, when Obama looks north, he sees Britain.

[Major Matt Mason]

and tweak dictators

So this means that Harper will be tweaking Obama before too long.