I really think left-right and honest-dishonest are useless dimensions to evaluate Congress members on. The job practically requires ideological fuzziness and truth stretching to get anything done. This is a feature: legislatures that require high ideological purity tend to become rubber stamps. DPRK is a good example.
You're bothesidesing and rationalizing a complete lack of integrity.
AIPAC money, PAC money, and gold bar bribe takers are definitely corrupt and need to be in prison.