When President Trump pushed ahead with a 10% tariff on all Chinese merchandise, he also closed the century-old de minimis exemption, which allows packages worth under $800 to be shipped into the country duty-free.

Americans love Shein, Temu and AliExpress for two reasons: low prices and fast shipping. Trump’s tariffs could change that. His tariff orders reversed a long-standing shipping loophole: the de minimis exemption.

Trump revoked a tax loophole that saved companies tens of billions of dollars in fees on imports. Prices on such orders could now go up an average of 30 percent.

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Trump has also threatened to introduce tariffs - a tax on imports - on goods from Canada and Mexico, but paused these for 30 days after both countries agreed to boost border security. The US president has said tariffs are needed to help the American economy and to "protect" the country from the "major threat of illegal aliens and deadly drugs".

U.S. President Donald Trump has said that although Britain was "out of line" when it came to trade he thought it may be able to avoid tariffs, adding of the imbalance: "I think that one can be worked out.