With the way the LE is in the US, I'm having a hard time believing that this would be internal or American LCN related. This is either coming from Canada or Italy, and seeing how Cali has Sicilian connections and the Gambinos doing business with mobsters from Toronto, Canada seems like a good candidate here. This possibly all goes back to drug trafficking/distribution. I think it's best for American mobsters to get out of the drug game and stick to safer routes like construction and gambling.