Without having the facts, I can't comment on why they might have possibly been under the impression that they had been given permission to bypass or be waived through the checkpoint. I have no idea how clogged up or busy the checkpoint was. Perhaps, the Italians thought there was some danger involved in being in a long queque and just decided to go to the head of the line. We can speculate all kinds of things, but of this I can be fairly certain, neither the Americans or the Italian agents wanted this to happen. It was not intentional.
They seem clear and complete to me.
I don't know what more they can add.
You will get no further facts, just allegations.