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,

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.

President Trump has continued his threats to place reciprocal tariffs on countries that impose tariffs on the United States.