Haitians criminals got a presence in cities like New York and Atlanta. But it look like in Atltanta they hang with other blacks. While in New York, you had the Haitian Mafia Crips that were a presence in Brooklyn Flatbush.
You also had some haitian gangsters in the 90s, like Haitian Jack, Jimmy Henchmann and others, but it look like they were doing things with other blacks also.

Haitians crime groups also jave a presence in other caribbean islands, like in the Bahamas.
But, its true, Montreal and Florida are the strongehold of haitian organized crime groups outside of Haiti.