A Latin term that’s been little-known outside the world of customs brokers has suddenly become the stuff of headlines. Along with imposing new 10% tariffs on all Chinese imports as of Feb. 4, US President Donald Trump suspended his country’s special rules for “de minimis” merchandise from China and Hong Kong.

The trade loophole is meant to ease small-scale sales — but critics say it's been abused and gives Chinese firms an unfair advantage.

President Trump’s order imposing additional tariffs on China this week also suspended a popular trade exemption known as the de minimis provision that has let bargain platforms such as Shein and Temu skirt import duties and red tape on low-value packages from China.