Ok so admittedly I've been watching a couple of Michael Franzese's videos on youtube. Some first hand statistics he gives is that in 1986 he was cited as one of the top 50 mob bosses in America, by today he's the only one still alive.
So Marcone being on top for a couple of decades in real world is fairly unlikely. So I have a WAG, that Marcone in addition to positioning himself within the Accords, has managed to convince some of those human US factions we here about in the background to let him be the Unofficial Ambassador to the Supernatural factions.
It would secure his position as being all but impossible to prosecute, as he's too vital for the role he plays. Lucky Luciano and a few other Mob bosses had similar deals in WW2, or against Cuba.
This would be beneficial to the Nation not only because he's the only pure human on the accords, but also as a measure and step against Lara Raiths increase in power as well. As Thomas says Lara wants control, and even by Changes was able to bring a chopper into Mexico. Laras power has really only grown since the Fall of the Red Court, and the loose alliance against the Fomor.
Marcone would be seen as the devil they know. Even Harry views him as such.
So thoughts?