This movie was horrible and the only reason it was even made was because the story appealed to the far-left. I consider my self a moderate, so I was able to see this film as the pile of garbage it was. While I'm not a Bush fan, your dislike for GW is not enough of a reason to see this movie.
To start, the movie was shot on such low-grade film that it comes off as cheap, rather then artsy. Additionally, the characters are seriously lacking in depth. Chris Cooper's character was a poor parody of George Bush; better suited for Saturday Night Live then a Dramatic film. The rest of the characters are walking clichés and are poor facsimiles of other characters from much better movies.
Avoid this movie at all costs!