ADDITIONAL U.S. RULES OF INTERPRETATION 1. In the absence of special language or context which otherwise requires--

  (a) a tariff classification controlled by use (other than actual use) is to be determined in accordance with the use in the United States at, or immediately prior to, the date of importation, of goods of that class or kind to which the imported goods belong, and the controlling use is the principal use;

  (b) a tariff classification controlled by the actual use to which the imported goods are put in the United States is satisfied only if such use is intended at the time of importation, the goods are so used and proof thereof is furnished within 3 years after the date the goods are entered;

  (c) a provision for parts of an article covers products solely or principally used as a part of such articles but a provision for "parts" or    "parts and accessories" shall not prevail over a specific provision for such part or accessory; and

  (d) the principles of section XI regarding mixtures of two or more textile materials shall apply to the classification of goods in any provision in which a textile material is named.

  [COMPILER'S NOTE: Multiple sets of changes to the Harmonized System have caused heading and subheading numbers and product coverage in some rules of origin for free trade agreements to be inconsistent with those in current tariff schedule chapters. Negotiations are required to enable agreement partners to update each text, plus domestic actions to implement agreed changes. As a result, the rules of origin provisions for certain United States free trade agreements have   NOT been updated since major changes to the HTS were proclaimed. Where not updated for HS changes, be aware that the rule you try to apply may contain HTS numbers as in effect in 2002, 2007 or 2012. You can find U.S. proclamations updating rules in the Federal Register (see annexes for operative language). Changes in rules of origin reflecting HS 2022 modifications are generally not yet negotiated and proclaimed for FTAs.

  The new United States-Mexico-Canada Free Trade Agreement, are set forth in terms of HS 2012 and may not contain current tariff numbers for some products. However, the rules for the United States-Australia Free Trade Agreement, the United   States-Chile Free Trade Agreement, the United States-Bahrain Free Trade Agreement, and the United States-Korea Free   Trade Agreement have been updated to reflect HS 2017, and the pertinent general notes do reflect proclaimed rectifications through 2007 or 2012, depending on the agreement. Presidential Proclamation 9555 set forth modifications to the rules of origin for the United States-Oman Free Trade Agreement (effective February 1, 2017), the United States-Panama Trade Promotion Agreement (to become effective pursuant to a future Federal Register notice from USTR), and the Dominican Republic-Central America-United States Free Trade Agreement (effective as of November 1, 2020). The United States-Singapore Free Trade Agreement's rules were updated in annex IV to Presidential Proclamation 10053 of June 2020, effective as of September 1, 2020; and the United States-Colombia Trade Promotion Agreement updates are effective January 1, 2021. Last, the new trade agreement between the United States and Japan (see general note 36 and chapter 99 subchapter XXI) does contain rules of origin that do not appear in the tariff schedule. Consult Customs for guidance if materials have not been posted on their site.

Presidential Proclamations to implement both WCO changes and updates to FTA general notes are posted on the Web site of the United States International Trade Commission, www.usitc.gov, under "Modifications to the HTS."

  Contact officials of U.S. Customs and Border Protection in order to ascertain how to apply out-of-date rules and whether affected goods qualify for FTA treatment. A ruling on an individual shipment may be necessary.]

                General Notes 1 Tariff Treatment of Imported Goods and of Vessel Equipments, Parts and Repairs. All goods provided for in this schedule and imported into the customs territory of the United States from outside thereof, and all vessel equipments, parts, materials and repairs covered by the provisions of subchapter XVIII to chapter 98 of this schedule, are subject to duty or exempt therefrom as prescribed in general notes   3 through 36, inclusive.

2 Customs Territory of the United States. The term "customs territory of the United States", as used in the tariff schedule, includes only the States, the District of Columbia and Puerto Rico.