The rapid-fire shots of tariffs and import curbs hearken back to Trump’s first term in office, when the U.S. and China engaged in a trade war that spanned most of Trump’s first four years in office and was continued to a certain extent under his successor, Joe Biden.

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

Trump has paused tariffs on small-value packages arriving from China, apparently to give U.S. agencies time to sort out how to process millions of such shipments.