De minimis origin rule preserves preferential origin where non-originating inputs remain below specified thresholds and other criteria are met. The De minimis rule deems goods that do not undergo the required change in tariff classification to be originating where limited non-originating inputs remain within prescribed value or weight tolerances and all other origin criteria are met; for textile goods the tolerance is measured by weight of basic textile materials, and for other goods by value of non-originating materials. Such non-originating inputs must be included when calculating any applicable qualifying value-content requirement.