I posted a working link above that talks about a major drug deal that the bonanno's and rizzuto's were involved in, and it's been mentioned in many articles that factions in New York did not like sal because he got his position through a rat

"McGurn likes you, so I make you. So you are now one of us, if you fuck up, we take it out on McGurn. He is your sponsor. Fuck up, it's his ass. You work in his crew, he is your capo."