Mr Trump’s new trade barriers will be a blow not only to American consumers, but also to the e-commerce companies that have cashed in on the de minimis exemption. Shein, a Chinese apparel group whose largest market is America,

The Trump administration move to stop low-cost imports entering the U.S. tariff-free is likely to hit fast fashion retailer Shein harder than online dollar-store Temu, thanks to Temu's wider product range and moves to change its shipping strategy.

USPS said it would work with Customs and Border Protection to implement a collection process for new China tariffs to avoid delivery disruptions.