Why not charge Mafiosi with terrorism generally and, in particular, because their associations could be with foreign agents? I think it's a theory of the crime that should be explored.
I think it's only a matter of time. Eventually some wiseguy will get caught in a drug deal with a foreign national, who uses the cash to help finance al-Qaeda, and they'll use the anti-terrorism statutes to try everyone up and down the line. Kill two birds with one stone.