By mid-2019, the tariffs were lifted for Canadian and Mexican imports, which accounted for 27% of the U.S.’s steel imports and 43% of its aluminum imports. The Biden administration later ended tariffs on European Union metals in 2021, amid record-high steel prices fueled by COVID-19 supply chain disruptions.

President Trump says reciprocal tariffs will kick in on April 2, when the U.S. will match the higher tariffs other countries impose on the U.S. Economists explain why this “tit for tat” strategy isn’t effective trade policy.