That would be news to me. Which country are you referring to?

i mean even in the US politicans frequently have a JD? Whether you consider that a valid credential in this case for 'law background' is another thing

Yes, many US politicians have a JD. That helps them become 'smart' politicians, that is to become corrupt while being legal. That legal training helps what to say, how to keep layers between them and the money, etc.