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

China’s tit-for-tat duties on U.S. imports took effect Monday, just hours after U.S. President Donald Trump announced that he wants to slap new duties on all steel and aluminum imports to the U.S. The rapid-fire shots of tariffs and import curbs hearken back to Trump’s first term in office,

China's tit-for-tat import taxes on some American goods are coming into effect on Monday, as the trade war between the world's two biggest economies escalates and US President Donald Trump threatens to hit more countries with tariffs.