For decades, the U.S. “de minimis” rule let people import small items without paying duties or tariffs. After the limit was raised to $800, millions of small shipments became common, especially through online shopping. Supporters say it keeps prices low, while critics argue it hurts U.S. businesses and allows unsafe goods in. Starting Friday, the exemption ends, meaning all imports could face duties and extra customs checks. In response, several countries have temporarily suspended shipments bound for the U.S. ahead of the change.

Source: https://www.nbcnews.com/business/business-news/de-minimis-exemption-ending-canceled-orders-shipping-us-what-to-know-rcna227794