I think what is happening is the two Calabrian families along with the Bananno's and Buffalo are taking out the Mustiano's/Rizzuto.

I don't think American LCN are proving the shooters here maybe it's more support.

Also, they have strong ties to the mother land as well and it looks like the
Gambino's maybe trying to pick up some territory while it is up for grabs.

Also it is possible that because of increased Border Patrol and ICE the Mexican Cartels are feeling the pinch

Just maybe the Canada border since Trump became more important.....