You'd have to ban all private sector employment, book deals, and basically any other means of money transfer. It's impossible. The only way to stop corruption

You'd have to ban all private sector employment, book deals, and basically any other means of money transfer. It's impossible. The only way to stop corruption is to make the incentive structure altogether unattractive. Singapore, for example, has done a world class job doing so and has one of the lowest corruption rates in the world.