LyrArc Article Gist
FR24 points out that it is not that unusual to see prosecution of French former presidents and prime ministers for campaign financing irregularities or putting political party officials on public payrolls. It shows that this happened to president Chirac, president Sarkozy, and prime minister Fillon. In fact former prime minister Fillon was doing well in the elections after the presidency of Socialist president Hollande. The revelation that he had put his wife on public payroll as parliamentary assistant with little work led to Mr. Macron taking his place as the leading candidate. No jail terms were served for these charges under French law. Here it is important to note that French law limits spending on election campaigns to 22 million euros and Sarkozy exceeded that number. In the US and India there are no such strict limits.

So are France's leaders that much worse than the American leaders who spend and collect money lavishly? Or in India where the campaign financing has the result of making it hard to build the infrastructure desperately needed by a young aspiring population. Framers of the Indian constitution including Gandhi and Nehru intent on getting the British out never realized that political parties would look to public funds as ways to finance their campaigns, leaving less for the intended purpose of building roads and bridges making the country a poor place to invest in and entrenching underdevelopment and poverty. 

In the US tech companies in Silicon Valley or banks in New York and Silicon Valley, pharmaceutical companies and companies in other sectors, are able to gain monopoly positions or favored regulatory setups for their industries by funding election campaigns for Congress. When this results in egregious behaviour such as the 2009 financial crisis or the current banking crisis this behaviour causes severe damage to ordinary Americans much worse than what Mr Chirac or Sarkozy were prosecuted for. 

South Korea has a long history of prosecuting former presidents. Three presidents have been prosecuted so far. One president served as much as five years for a jail term.