Well, he sure would have been qualified to run for Prime Minister of Canada until 2014.
This really is a disaster if in fact he took office illegitimately. IIRC there is a requirement that you be a citizen of the United States to hold the Office of U.S. Senator. Is this correct? If so, then how is it that a man who claims himself a constitutional scholar could make such an error? Not trying to be a smart@$$ but I really do not fathom WTH is going on here!