Here's another Costello story that's rich in irony:

William O'Dwyer made a nationwide reputation for himself when, as Brooklyn DA in 1940-42, he smashed "Murder Inc.," the Brownsville-based gang of hired killers who were used by the Commission and other OC customers. But O'Dwyer didin't hesitate to ask Uncle Frank to use his vast political clout to get O'Dwyer elected Mayor of New York in '45. The quid pro quo: Mayor O'Dwyer allegedly ordered police to go easy on gambling, Costello's bread and butter. Meanwhile, a new Brooklyn DA, the incorruptable Miles McDonand, began investigating corruption among police and politicos, a trail that led to Harry Gross, a bookie doing $20 million in 1950 (equal to $253 million today). More than 70 police were indicted, and 500 more resigned or retired. McDonald allegedly was closing in on O'Dwyer's connection with Costello. Mayor O'Dwyer, just months into his second term, abruptly resigned. President Harry Truman immediately appointed him Ambassador to Mexico, where he stayed until 1960