The administration has introduced a number of measures to amplify the shock of this 50% tariff. For instance, it has prevented importers from seeking any new product-specific exclusions. It has also tightened “melted and poured” rules, so that for a steel product to be considered a product of the U.S., Mexico, or Canada, and thus avoid the tariff, it must have been originally melted and then poured into a solid form (such as a slab or billet) within one of these three countries. Lastly, in August, the Commerce Department also expanded the coverage of the tariff to more downstream parts (like bulldozer blades and vehicle components) when it announced the addition of 407 product categories to the list of “derivative” products subject to the levy.