The idea that President Trump might — might — run on the platform on which William Jennings Bryan got defeated by William McKinley is, if you ask us, the big news out of Milwaukee. It is being mooted by both President Trump and the vice presidential nominee, J.D. Vance. The New York Times calls “their shared affinity for a weak dollar” the policy that could have the “most sweeping implications for the United States and the global economy.”