Well, it says “spreading in the US”, not “spreading to the US”. Also, this is about the Calabrian mafia, not the Sicilian mafia, which has been the dominant force in the American branch of the Italian mafia for the better part of a century, at least. They are two separate organizations, sometimes they collaborate, other times they war with each other.
Separate maybe, it would depend.
They will join forces if they feel threatened.
They’ve been around for a while, you occasionally will encounter them even here. There was a girl going to grad school and tending bar on the side that I just fell for once, hard. Until I met her father, that is. Very hard, cold for an Italian and an explosive foul temper. I wasn’t the one for her, she was reserved for one of her own was the distinct impression with which I was left. We saw one another a few more times but there was that odd love/fear/reverence thing going on with her, and it faded out. She’s still quite beautiful, I’ve seen her around all these years later, but married.