the feds apparently used to give a congratulations card to newly made guys in the past
Seriously?
Yes, or pay them a visit and say something like "we hear your moving up in the world" etc. It's a way of letting the made guy know the feds know who they are and are watching them. It's a tactic.
Tommy Shots: They want me running the family, don't they know I have a young wife? Sal Vitale: (laughs) Tommy, jump in, the water's fine.