I'm sure that the Corleones would have developed alot of info on people they did business with, especially a Senator. Murdering even a prostitute is not something you do with alacrity. I'm sure they put alot of thought into it. At this point, I don't think Fredo was considered much of a risk.
"Generosity. That was my first mistake." "Experience must be our only guide; reason may mislead us." "Instagram is Twitter for people who can't read."
