Our Prime Minister's language difficulties are more structured (for want of a better word) in that he makes the same kinds of grammatical errors repeatedly. For example, mixing singular and plural forms. I have never heard that his writing skills are lacking so it is just an oral affliction. Also, though I would never vote for the man, I do not think that it is a sign of his intelligence or lack thereof.

As to Mr. Bush, he seemed to be suffering the from the dual afflictions that a significant segment of the press don't like him and he gets tongue-tied. (As opposed to Bill Clinton who was disliked by a large segment of the press and, oh never mind..) I think that perhaps people are misunderestimating Mr. Bush.