Jewish mob boss Hyman Roth wanted to bring down his rivals, the Corleone crime family, who killed his old friend Moe Greene back in 1954. Roth gave the go-ahead for the Rosato Brothers to split from the Trapani crime family, and furthermore, for Carmine Rosato to nearly assassinate Corleone Capo Frank Pentangeli. He arranged for a police officer to arrive at the scene to intervene before Pentangeli died, so he was let loose into the alley, with the thought that Michael Corleone had set him up; Corleone wanted a peace meeting, and the hitman who was strangling him whispered "Michael Corleone says hello". This poisoned his mind, making him want to get revenge. Roth bribed attorney Erwin Questadt, a man who would preside over the senate committe hearing on organized crime, so that he would get the upper hand in the hearings. This plan, he thought, would crush the Corleones.