The Racketeering laws basically killed the mob and prevented any chance of them returning to the glory days. For decades, the mafia godfathers were able to insulate themselves from prosecution, letting their underlings take the fall and protecting the organization.
RICO (The Racketeer Influenced and Corrupt Organizations Act) changed this by allowing them to be charged with running an illegal enterprise, regardless of whether they committed the crimes or not. With the commision trial in the 1990s, followed by the disastrous reign of the Teflon Don, the government was able to expose the mob and bring them out into the light.
But what if the mob saw this coming years ago and wanted to take steps to prevent it? There have been times throughout the nation's history in which the mob and the government have assisted each other, directly and indirectly. could the mafia have successfully nurtured these relationships in order to protect themselves from prosecution?