As noted before: Though Michael controlled the New York "olive oil business" through Frankie, he probably left local police contacts exclusively in Frankie's hands--the better for Michael to appear "legitimate" in Nevada by limiting the number of people who knew he was Frankie's boss. The real question is: why didn't Tom know about it? As he told Michael: "Our people with the New York detectives said he was half-dead, scared, talking out loud about how you betrayed him." Well, where were your contacts when you advised your one and only client that it was safe to perjure himself under oath? Duh-h-h, Tom!