I have heard from someone I consider to be a very reliable source that during one of several visits to the post-Katrina disaster area in Mississippi, George W. Bush was 'drinking like a fish' on Air Force One. Supposedly the source was invited onto Air Force One by Bush and soon after entering the plane Bush promptly began drinking beer and offered the man one which he turned down. The man (who is a staunch republican) spent a fairly long time on the plane talking with the president and he was somewhat appalled to see the president "drinking like a fish" in the middle of the ongoing crisis. He said Bush kept on talking and talking ad nauseum while consuming several beers. Finally the man had to interrupt the president telling him, "Sir I'm sorry but I have work to do so I am going to have to leave" at which point they shook hands and he left. Now I am not going to reveal my source as he already told me he would deny it if confronted with the accusations so I have no 'proof' but I personally believe the story is true.
cya
Ben