I am American but why not classify it as North America instead? Canada and Mexico do not have a voting option.
I felt as though it used to be there, but might have been replaced by one of the Europe's, or maybe I'm just delusional.
I think that's something only moderators and admins can do =P. I'll see if there is a way to do it within Xenforo, but I haven't been able to find it yet.