A lot of Outfit followers are saying John DiFronzo basically split the Outfit in to two factions once he was released from jail. The criminal Michael Sarno/James Marcello faction who go around fire bombing and threatening peoople, and DiFronzo's own legitimate Elmwood Park crew with Marco D'amico, Joe the Builder, and others. Looking at them as two separate families is a little extreme but in any case DiFronzo doesn't want to make Sarno and seems to want to stick with union bidding and construction stuff while he separates himself from hotheads who want to destroy the town. This is my favorite theory for what's going on in The Outfit, but if it's factual, I'm not sure. The only thing that's certain is DiFronzo has imposed a ban on narcotics trafficking within his own group of associates - due to the death of his son via overdose.

And Daniel's correct, I'm not sure if that's how 'made men' work, but capos have always had their own Underbosses, in a sense.