President Donald Trump is considering changing a key U.S. trade benefit to other nations, the "de minimis" exemption on import tariffs, as he accuses China of unfair trade practices and blames it for a crisis over the deadly drug fentanyl.

A record number of US companies in China are thinking about moving some operations out of the country or are already in the process of doing so, according to a new study, as geopolitical tensions rise with Donald Trump’s return to the White House.