Wikipedia's list of fab lines https://en.wikipedia.org/wiki/List_of_semiconductor_fabricat... has 4 in Italy, 3 Intel ones in Israel and 2 by an Israeli firm named Tower Semiconductor, which on its page has 2 in the US plus there's a joint venture with more. To get an idea about how this can go in the less cutting edge market, all but one of their fab lines was purchased from another company or in one case acquired through a merger.