The U.S. Court of International Trade has upheld a decision by the Department of Commerce regarding countervailing duties on certain steel products imported from South Korea. This ruling, dated October 27, 2026, affects the Korean steel manufacturer POSCO and the Government of the Republic of Korea, which intervened in the case. The court's decision is significant as it clarifies the standards for determining whether a subsidy is considered specific under U.S. trade law.

The case, POSCO v. United States, Court No. 24-00006, centers on the Department of Commerce's review of countervailing duties for certain carbon and alloy steel cut-to-length plates imported from Korea during the review period of January 1, 2021, to December 31, 2021. The court's ruling comes after a series of remands and evaluations regarding the allocation of emissions permits known as Korea Allowance Units (KAUs), which were deemed to potentially represent a subsidy.

Initially, the Department of Commerce had determined that the allocation of KAUs was specific because eligibility was contingent on export performance. However, the court found this reasoning unreasonable and ordered Commerce to reevaluate the specifics of the subsidy under a different legal standard. In its second remand results, Commerce concluded that the provision of KAUs was indeed de facto specific, meaning it was limited to a small number of companies, thus qualifying as a countervailable subsidy.

The court, led by Judge Jane A. Restani, confirmed Commerce's findings, stating that "the provision of additional KAUs is de facto specific because the recipients were limited in number." This decision was based on a comparison of the number of companies receiving KAUs (494) to the total number of companies operating in Korea (906,325), indicating that the subsidy was not widely available across the economy.

The ruling is crucial for the steel industry and U.S. trade policy as it reinforces the criteria used to assess the specificity of subsidies. The court noted that the specificity test aims to prevent narrowly focused subsidies from escaping scrutiny under U.S. countervailing duty laws. The court emphasized that the Department of Commerce has the discretion to determine the appropriate comparison group when assessing subsidy specificity.

The implications of this ruling extend beyond POSCO and the Korean government. It sets a precedent for how subsidies will be evaluated in future cases, particularly those involving environmental regulations and emission trading systems. Businesses and governments involved in international trade must now consider this ruling when structuring their subsidy programs to ensure compliance with U.S. trade laws.

Looking ahead, it remains to be seen whether this decision will be appealed. The court's ruling does not preclude further legal challenges, and the Department of Commerce's determinations in similar cases may also come under scrutiny. Industry stakeholders, particularly those in the steel sector, will be closely monitoring any developments related to this case and its broader implications for trade practices.