In the modern day iv'e heard numerous reports from books, documentaries and ex-mobsters that the 5 families have a number cap for memberships, from what iv'e heard today's roughly are: Gambino's and Genovese 250 max (sometimes seen Genovese listed as 300), Lucchese 130, and Bonnano and Colombo 120.
However its often discussed on here how in say the 50s, the membership caps were in some cases much higher, reports vary greatly but I have seen some say Gambino's and Genovese at 400-500 made members.
When did the commission, or just in general, was it decided to cap the numbers at much lower? I would say up to the end of Castellano, the Gambino's for example may have had more than 300 made guys. Seems, from the 90s the caps were lowered fairly significantly, is this so?