The US Supreme Court has adopted a code of ethics, but is it any good?

People are criticizing this code on the grounds that they don't trust the right-wing justices to heed it. That is a valid point, but under public pressure they might heed it. That leads to a second question: supposing they do heed this code, is it adequate?

For instance, what does it say about the situation where a justice has received gifts from a rich person and then a case arises in which the giver has interests at stake, or political views? If it doesn't call for recusal in that situation, then it winks at corruption.