Question: Angelo Meli was the leading chairman of an American Mafia crime family based where?
Sentence (from "Milwaukee crime family"): The family's most influential boss was Frank "Mr. Big" Balistrieri, who was greatly involved in the Las Vegas skimming casinos. Today, the crime family is nearly extinct, since Balistrieri died in 1993, with the "Chicago Outfit" gaining control over some of the illegal rackets in the area.
Relevant evidence: No