It is clear that the Italian-American Mafia invested in the John F. Kennedy Campaign For President in 1960. And at least to a certain extent got Jack Kennedy elected President of the United States. Especially if you look at their role in Chicago in the Illinois election. And what JFK ever knew about the Mafia's involvement in his presidential campaign, I don't think we'll ever know. But his father Joe Kennedy certainly knew about it and perhaps even reached out to Italian-American mobsters.
But as President of the United States especially because of his Attorney General, who just happened to be his little brother Robert Kennedy, the Italian Mafia didn't get much if anything for their investment in JFK. The Kennedy Administration if anything under Bobby Kennedy went harder after the Italian Mafia and put policies in place that essentially eliminated the Italian Mafia in America by the early 1990s. With new wiretapping laws and isolating these crime families and going after their leaders.
So yeah, the Italian Mafia may of stole the 1960 presidential election for Jack Kennedy and I'm not saying that is a good thing and not serious. But they if anything invested in their own demise and help bring themselves down, instead of investing in Richard Nixon for President in 1960, who didn't have any special plans to go after the mob, or at least didn't run on them. So you can't make the case that the Italian Mafia had bought President John Kennedy, because if anything the opposite is true.