Donald Trump has put himself in a box by taking the side of Leave. His overblown predictions of how wonderful Brexit will be may come true and the U.S. economy, along with the world’s, stays the same or strengthens. In that case, with a good economy, the advantage goes to Clinton. On the other hand, if the Brexit makes a mess of anything (financial markets, UK unity, Europe etc.) Clinton can once again hammer Trump on his clueless utterances about international affairs. Again advantage Clinton.