That is, in fact, a beer that George Bush is drinking. However, it's a Buckler, a German "non-alcohol" beer. Nonetheless, they do contain a small amount of alcohol, just not the average 5% that most American brews do (it's more like Oklahoma "near beer"). Still, if you drink enough of them, and you don't have much of a tolerance for alcohol, it can definitely make you a little queasy the next day.
They're discussing the dangers of NA Beer for alcoholics over at Shakesville (though let me point out that the President has never admitted to being an alcoholic, just that alcohol, in the past, became a problem for him and that's why he quit drinking).