While many of us have had many differences about multiple American administrations over many years, we recall fondly Bill Clinton's necessary involvement in the peace process in Ireland and much more beyond. We are well removed from that now. We now have Donald Trump and his very simple formula. He took his country's trade deficit with each country and divided it by two. David McWilliams put it well when he said this would probably be a fail in ordinary level economics but it is no laughing matter. It is followed u…