It was many things Furio, but Arthur Nigro pushed for it over some beef around the time Bruno and Scibello were fighting gambling charges. There was a great amount of fear that Bruno would flip, a lot of people in on the hit raised their status.

That is my fault, I forgot about that. It is just Junior Gotti mess up cost alot of guys in the other families headaches when the feds raided him. That is the most embarrassing thing to happen for LCN, a few years worth of made members and some were under LE radar before those lists were discovered. Those should of been destroyed. There are instances where guys get pinched with a phone book, or rolodex with some of the actual names while most are nicknames, but list of actual made men, that is embarrassing.
Honestly if Esposito was not a good earner, or son of the Gigante, he would have been killed years ago, especially with the George Barone incident.

There have been several.

Chin not being able to kill Costello.

Chin not listening when told Savino was a rat.

Genovese and the Appalachian meeting are a few of the well known examples.

What was the Barone incident?

Barone was born in the 1920s and controlled unions for the family when in the 1990s had the order to find a well payed job for Andrew Gigante,the mob son,in a company that Barone owned but he said no because disliked Gigante but because was a family veteran hecthinked he can say what he wanted and was angry for the lack of respect.
As an answer Barone was shelved and the boss ordered to kill him,Barone was informe by an old friend to don't go to NY because the voi e on the streets is that he's a dead man.
So Barone flipped for save his life.

They all swear they ratted to save their life, or that they were wronged.

Furio, how can you know??

https://gangstersinc.org/profiles/blogs/genovese-soldier-george-barone

“I went bad,” Barone said about his new role as government witness. “I wanted to get even. I wanted to survive. I didn't want to get killed by them,” he added, referring to Vincent Gigante and his Genovese Family. “I decided that the Mafia is not the paternal, wonderful organization that it proposes to be. The esprit de corps does not exist. Greed, violence, betrayal: that is what exists.”

They ALL say that when they rat!!! No one believes it, he was in the life till he was 85 years old, then decided that it was not as he thought?

So if that's the case then basically Al Bruno was very likely a Scarpa-type informant for many years, maybe not a maniac like Scarpa but still.

Bruno didn't tell the FBI (when you talk to one agent, it's the same as talking to the whole agency, so let's keep it real, he talked to the FBI) that Fusco WON'T be made, he said that he SHOULDN'T have been made, according to the accusation. I don't have proof of shit I'm just saying that if that's true then yes it makes him a rat of some sort. You don't hang out with agents and talk about Mafia inductions and expect your fellow wiseguys to be okay with it. What the hell was he smoking?

Al Bruno was a personal friend of mine. And I can tell you now, he was a very good guy. Ballsy, fair, and had a nice personality. He got whacked for NO good reason by cretins who couldn't carry his jockstrap.

All because of the green-eyed monster!

RIP Al