If you remember from the petition signup form, Canadian territories are actually listed along with US states. I figured that the majority of signatures would come from the US and Canada, so that's why I did it that way. Showing signature percentages based on North American states and territories will be easy because of this, but doing text searches on the database for specific country names for the rest of the world will be a huge pain in the ass, not to mention bring the server to its knees.