I wouldn’t try bringing any prosciutto back to the US with you — customs will confiscate it. At least they did when I declared ours in Chicago! A friend of ours (a wily Milanese) told me that my mistake was my honesty — if I’d tucked it well within my suitcase and fibbed, I’d have been all right. But his theory was proved wrong the next time he tried to smuggle some speck back into the States after a trip home — they swiped that too. My advice is to stick with cheese and limoncello ; )