Just for the record there is nothing "anti-Canadian" in choosing to live in another country or even represent one in international sports if you're a Canadian citizen. Its not always a black and white, "you're with us or you're against us" proposition - this is the same attitude that Canadians will continually criticize Americans for having, and yet its becoming more and more common in Canada as well.
It must also be said that Canada is HORRIBLE at investing in sports and athletes, except outside of hockey. I cant really blame athletes for making the jump elsewhere if they have family ties (Rusedski an exception - that was pure mercenary behaviour) - Canada Soccer for one is one of the most dysfunctional outfits on the planet, and for a while Tennis Canada wasn't much better.
At least things are moving in the right direction now - at least tennis wise
The thing with Levine is that he adds nothing new to the team - Diez at least is a clay specialist - and this doesnt address the fact we are still woefully behind in the number 2 singles slot when compared to the big guns like Spain, France, Germany, US etc... But if he wants to play for Canada so be it - welcome aboard