According to online reports, former U.S. Treasury Secretary Larry Summers said in an interview that Trump's tariff policy violates economic logic. This means higher prices for consumers and much higher input costs for U.S. producers. Summers questioned: Why, of so many countries in the world, should we now decide to launch an economic war against Canada? Canada's minimum wage and basic wage are higher, and unions also protect workers more than the United States. I just don't understand the logic of these policies. There is no doubt that this is a regressive tax refund on American consumers. (Jin Shi)