Customs and Border Protection is “discriminating” against U.S. importers using foreign-trade zones by not applying a cut in Section 301 tariffs on some Chinese-made goods, according to National Association of Foreign Trade Zones President Erik Autor. The U.S. agreed to halve 15 percent tariffs on about $120 billion worth of Chinese goods as part of a phase-one trade agreement that went into effect on Feb. 14. But CBP has decided to apply the 15 percent tariffs to goods that entered...