The fight for money and influence has turned politics into a fertile ground for corruption - in every country. The only effective response is strict prohibition: Politicians must not be allowed to overstep the line between public service and private careerism.
People who value money are unlikely to become politicians. But corruption remains endemic. Here are five reasons why.
When a lust for power meets with abundant resources, corruption is almost inevitable. The US appears to have found a unique response: Thanks to Citizens United, many questionable practices have now come under the protection of the law.