diplomacy. if we can't come to an agreement say with mexico or with china, the first response is to build a wall or to build barriers of other people. we've also learned from history that's a short-term solution. you can build a wall and get short-term relief, but you can't rely on walls for long-term geopolitical solutions. >> wouldn't the israelis say, look, we, too, have walls and they've been effective at limiting terror? >> they've been effective at limits terror but they haven't solved the problem of the middle east. >> your response to the wall among other things is to say it's a short-term fix to a problem that, frankly, doesn't exist, at least exist the way that it had in the past and does nothing to bring us closer to the long-term solution that's necessary? >> basically correct, yes. it might stop people from killing each other in the short term, but it's not a step to a long-term solution, that's what i think. >> the president signed -- one other aspect of this, and it