Ending tariff exemptions on low-cost packages from China has broad bipartisan support in Washington, and Trump pulled the plug when he raised tariffs on Chinese goods by 10% earlier this week. Goods sent through duty-free packages became subject not only to existing tariffs — 25% for many Chinese products — but also the new 10%.

US President Donald Trump has suspended tariffs on small packages from China, after his sudden order ending duty-free treatment for shipments worth less than $800 (£645) left the US postal service and other agencies scrambling to comply.

China hits back with export controls, Canada and Mexico remain under threat. USPS closes then reopens "de minimis" small package loophole