I don't think even this would work, unless, you know, we start exiling politicians to Mars or something like that, where they'd be completely out of touch with

I don't think even this would work, unless, you know, we start exiling politicians to Mars or something like that, where they'd be completely out of touch with the society that they were in. Sure one can (theoretically, this is just not going to fly in practice because those who are already in power won't let it happen) prohibit direct employment and other official forms of affiliation, but it would be hard to prohibit receiving gifts, talking with good friends, getting invitations and so on. Yes, you can list such things, and let judges review it, but humans are creative and there always will be loopholes.