If you want to ask about corruption, the most blatant piece of corruption in the past several years was in the town of Cicero. 

Betty Loren-Maltese used to be the Town President of Cicero. She inherited the job from her husband, Frank Maltese, who had to resign after he was convicted of mob-related gambling charges. Loren-Maltese got into trouble when a reporter discovered she had bought a house in Las Vegas for $1 million, yet her salary was $85K. So where did the money come from? 

The U.S. Attorney started looking into Cicero, and discovered that Loren-Maltese, the Town Treasurer, the Town Attorney, the Police Chief and his predecessor, and a couple of mafiosi had robbed the town of $12 million.

The replacement as Cicero Town Attorney, Edward "Fast Eddie" Vrdolyak, a former Chicago Alderman, was convicted of fraud. His successor was shown to have overbilled the town, but paid the money back and no charges were filed.