I don't get it. I just don't

I might be missing something important here but I am a little confused. In the mornings while I wait for all my munchkins to arrive, I watch one of those morning news/talk shows. They are building up the hype for the 2010 Olympics in Vancouver. Great. They have been profiling some of the athletes. I am starting to wonder though. All the profiles I have seen on the "Canadian" athletes are all the same. Not one of them were born in this country. Everyone of them has moved to this country in order to "represent" the country. I am a little confused. Do we not have enough talented home grown athletes here? Why are Canadian born athletes not being used? I must be missing some important part of the equation. For example the last profile I saw had the athlete being sworn in as a Canadian citizen. So this person has already been selected to represent us in the Olympics and yet they were not even a citizen yet? I just don't get it.