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

Existing American tariffs already restrict steel and aluminum shipments from China, which is now flooding other markets with its exports instead.