President Donald Trump’s push to tariff goods from Canada, Mexico and China included a change to how online purchases will be taxed when they enter the U.S.

President Donald Trump’s new trade levies against China, Canada and Mexico include a broadside against international e-commerce, with apparent plans to extinguish a long-held tariff exemption for packages worth less than $800.

President Donald Trump’s sweeping tariff threats have been touch and go. As it stands currently, the 25 percent tax on goods from Mexico and Canada is on ice for a month, but a 10 percent tariff on Chinese goods is set to take effect on Tuesday, via an executive order of questionable legality.

Donald Trump’s crackdown on tariff-free access for small goods could threaten the business models of Chinese ecommerce groups Shein and Temu by raising their costs while benefiting Amazon, analysts said.

Shein, Temu and Amazon Haul prices are likely to rise for American shoppers, analysts and industry experts said, after U.S. President Donald Trump this week shut a trade loophole that has been used to ship low-value packages duty-free from China.

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.