Tariff War Patience The latest Purdue University-CME Group Ag Economy Barometer survey of farmers fell 12 points or nearly 8 percent on concerns about the trade war’s impact on export markets. Surveys indicate that the American public expects tariffs to raise their cost of living. They also show that at least a portion of the public is willing to give President Trump some time (undefined) to see if his trade policy brings to fruition the benefits he has promised. Still, the public can be finicky.   Perseverance in the trade war will be easier for China, where the government controls the information flow and the pubic is steeped in the history of oppression by the West, from the Opium Wars of the 19th century to America&rsquo...