I can't add anything to that. Rolling Stone has a powerful argument ripping the lid off the almost unbelievable criminality, corruption, dishonesty, and incompetence of the Republican-run Congress under Bush. You can read it here.
Congress was corrupt in the era of the Robber Barons in the late 19th and early 20th centuries. Many members of Congress have lined their own pockets over the years. But the Republicans have taken corruption to such fantastic levels that it has become a patriotic duty to remove them from power. Happily, we will have that opportunity on 7 November.
(Thanks, Lance, for tipping me off about this via the related article about the ten worst members of Congress. Guess which party 9 of the 10 belong to?)