There are different Italian Mafia that operate on the American continent.
 In Canada:
There is the Cosa Nostra with the Rizzuto family operating in Montreal and to a lesser extent in Toronto.
For the Ndrangheta it is also present and probably the future biggest force in Canada with several clan based in Ontario (Coluccio, Commisso, Tavernese, Figliomeni ...) present in Toronto and its suburbs.
Also present in Hamilton (Musitano, Papalia, Luppino).
In Montreal (Cotroni Family).
Camorra, Sacra Corona Unita, Stidda have a presence in Canada.
In the USA:
The Cosa Nostra is the most present Italian mafia in the United States with 11 families still existing.
Ndrangheta is present in New York with Clan Ursino, Aquino-Coluccio, Commisso.
The Camorra would be present in Springfield, Los Angeles, New York it would have 200 members.
Sacra Corona Unita or Puglia Mafia would be present in the United States, Florida, Illinois and perhaps New York.
Stidda the new Sicilian mafia has a presence in the United States.