Where de minimis looks at US content inside the item, the foreign direct product rule looks at US technology behind it. A chip designed with US electronic design automation software, or fabricated on a tool made in the United States, can fall under US jurisdiction wherever it is made.
Successive expansions of the rule to specific destinations and entities have substantially widened the set of goods for which a third-country supplier needs a US licence, and have correspondingly increased the value of intermediaries who will misdeclare the end destination.