Because, like Obama, at the very least he has a divided oath of citizenship and cannot be president if he is still Canadian and to my mind since he was.
RE: at the very least he has a divided oath of citizenship and cannot be president if he is still Canadian
As i said before, one does not choose to one’s place of birth. If he renounces his Canadian citizenship, then the point is moot. If he does not, then yes, that becomes an issue.