On June 18, 2026, the Korea-U.S. Strategic Investment Act entered into force to implement commitments undertaken by South Korea and the United States during tariff negotiations between the nations. (Special Act on the Operation and Management of Strategic Investment between the Republic of Korea and the United States, Act No. 21486, Mar. 17, 2026.)Background Starting in 2025, the United States began negotiating agreements under its “America First Trade Policy” with trading partners such as South Korea. In late 2025, the negotiations between the U.S. and South Korea led to a deal under which Korea committed to invest about US$350 billion in the United States and purchase about US$100 billion of U.S. liquefied natural gas or other energy products. In return, the U.S....