crs_reports: R48872

Congressional Research Service reports with summaries, authors, and topic classifications.

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R48872 Nippon Steel’s Acquisition of U.S. Steel: Potential Implications for the Industry 2026-03-04T05:00:00Z 2026-03-06T16:38:00Z Active Reports Yong W. Kwon Manufacturing Policy United States Steel Corporation (USS) is an iron and steel manufacturer that employs about 14,000 workers in the United States. It is one of two companies operating domestic facilities that produce both iron and steel on-site (integrated iron and steel mill). These domestic facilities can produce both new and high-quality grades of steel, which certain manufacturers (e.g., automotive companies) use in their products. Japanese firm Nippon Steel Corporation (Nippon Steel) finalized its acquisition of USS in June 2025, following approval of the transaction by President Trump. USS’s management under this new ownership may carry implications for domestic employment and the rate of innovation adoption in the industry. In recent years, USS has taken some actions that coincided with falling steel prices. For example, the company reduced output and shuttered some of its legacy facilities, which has led to layoffs of workers in Michigan and Illinois. In addition, the company made investments in new facilities (away from legacy iron and steelmaking facilities located in the Great Lakes region) that produce raw steel using scrap steel—a process that is less labor-intensive than making new steel from iron. After USS publicly announced its acquisition by Nippon Steel in December 2023, the parties sought two regulatory approvals from the U.S. government. First, the Committee on Foreign Investment in the United States (CFIUS) began a review of the implications of Nippon Steel’s ownership of USS for U.S. national security. Second, the Department of Justice conducted a separate U.S. government inquiry on antitrust concerns. Workers employed by USS, a rival steelmaker of USS, some steel buyers, and some Members of Congress, responded to USS’s announcement by publicly raising concerns on how a successful acquisition or an alternative outcome may affect employment and the performance of steel and steel-using industries. In response to some of these stakeholder concerns, Nippon Steel made commitments to maintain existing USS facilities and add iron and steelmaking capacity in the United States. This plan may affect steel prices and operations at legacy integrated iron and steel mills if domestic steel demand does not keep up with the anticipated supply increase. Public policies that look to increase the demand for iron and steel in the domestic market carry potential costs and limitations. For example, laws requiring some public works projects to use domestically manufactured steel may more directly benefit scrap-based steelmakers that produce a dominant share of steel used in construction over operators of integrated iron and steel mills. Nippon Steel’s plans to maintain or restart assets at existing USS integrated iron and steel mills may affect the company’s ability to adopt innovations at these legacy facilities. Public investments supporting research and development or deployment of infrastructure for innovative iron and steelmaking processes may influence considerations. Existing production tax credits for metallurgical coal subsidize some legacy assets and technologies at integrated iron and steel mills. As a prerequisite to the acquisition, Nippon Steel and USS entered into a national security agreement with the U.S. government. The agreement terms include a “golden share” arrangement under which the U.S. government is to have certain rights with respect to USS, including those “relating to governance, domestic production and trade matters.” According to a news release from Nippon Steel, the agreement permits the President of the United States or a presidential designee to intervene in the management of USS under certain circumstances. Nippon Steel’s public statement on this agreement stated that the President of the United States has consent rights with respect to certain major decisions such as the transfer of jobs or production capacity outside of the United States or the closure of certain existing USS facilities. Congress may have the ability to engage in oversight of the executive branch’s enforcement of the national security agreement. The national security agreement is not available to the public. https://www.congress.gov/crs_external_products/R/PDF/R48872/R48872.3.pdf https://www.congress.gov/crs_external_products/R/HTML/R48872.html

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