Trump suspended the loophole in February for China, Mexico and Canada, but he reinstated it to allow Commerce Secretary Howard Lutnick to establish protocol for collecting tariff revenue on low-value imports that would be eligible for the exemption.

U.S. President Donald Trump on Wednesday issued a blitz of tariff announcements ranging from changes to previously threatened levies on imports of copper, goods from Brazil and South Korea, to ending an exemption from tariffs for small-value shipments from overseas.