The Trump administration’s decision to raise tariffs on “list 3” Chinese exports, worth $201.3 billion in the 12 months to Mar. 31, could add $30.2 billion to the past 12 months’ $59.4 billion of customs duties collected. While it is U.S. importers, not Chinese exporters, that pay duties there is evidence of burden sharing in the form of lower U.S. import prices from China. Overall import prices from China fell 1.1% in April versus a year earlier. The most marked decrease was in the chemicals sector where there was an average decline of 5.8% in prices after 44....