China's new trade dispute with the U.S. could test Washington's commitment to the World Trade Organization, which has so far escaped the scrutiny of President Donald Trump, a critic of multilateral institutions,

China hits back with export controls, Canada and Mexico remain under threat. USPS closes then reopens "di minimis" small package loophole

The world’s two largest economies did not cut a deal to avert sweeping U.S. tariffs, which came into effect after midnight. Beijing immediately retaliated.