The U.S. section 232 review of steel and aluminum imports is already drawing threats of retaliation, even before President Trump has decided on what actions to take. China has made it clear it will “take necessary measures to protect its own rights”. Those could range from WTO consultations to direct retaliatory tariffs. While the Commerce Department has already acknowledged the risk of such – hence the country-specific options as well as broader tariffs – there’s no reason why retaliation would be limited to equivalent products. Exports of all steel and aluminum products to all countrie...