On September 18, 2019, US Customs and Border Protection (CBP) published in the Federal Register a general notice that steel products from the Republic of Korea (S. Korea) that are covered by the quantitative limitations applicable to subheadings 9903.80.05 through 9903.80.58, HTSUS, that are entered, or withdrawn from warehouse, for consumption on or after October 18, 2019 must be presented with certificates of exportation issued by the Korea Iron and Steel Association.

Clause 7 of Proclamation 9777 (83 Fed. Reg. 45025), provides that where a government of a country identified in the superior text to subheadings 9903.80.05 through 9903.80.58, HTSUS, notifies the United States that it has established a mechanism for the certification of exports to the products covered by the quantitative limitations applicable to those subheadings, CBP may require that importers of these products furnish relevant certification of export information in order to qualify for the treatment set forth in those subheadings. If CBP adopts such a requirement no article that is subject to the export certification requirement announced in the Federal Register notice implementing the requirement may be entered for consumption, or withdrawn from warehouse for consumption, on or after the effective date specified in such a notice, except upon presentation of a valid and properly executed certification of export. S. Korea has notified the United States that it has established a mechanism for the certification of exports to the covered products, specifically in the form of official certificates of exportation issued by the Korea Iron and Steel Association, as authorized by S. Korea. Accordingly, Importations into the United States of steel products of S. Korea subject to absolute quota limits must be presented with valid and properly executed.