Not gonna lie, cutting former members of parliament off from insurance and pensions sounds like a poor idea. They will have to find work somehow, and if you have been a politician for 12 years there is a very good chance you won't find anything unrelated to your former position. Even if you mean well and simply apply the expertise you have gathered. Such a law might force you either into poverty or corruption. If you were a lawyer or a medical doctor you might be fine, but someone of lower socioeconomic status might not. Consider Gorbachev for example, he had to stretch his meager pension by giving talks, and barely came by.