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%.

In the two days since President Trump enacted new tariffs on goods from China, none of the major US shipping companies and couriers have yet announced detailed policies on new fees, though some have warned of possible delays and disruption.