Donald Trump has threatened to impose 25% tariffs on South Korean exports including automobiles, pharmaceuticals, and lumber, claiming Seoul has failed to honor commitments made in a trade deal negotiated last year. The president’s announcement specifically blamed Korea’s legislature for not enacting what he described as a historic bilateral agreement.
The dispute centers on a trade framework finalized in October 2024 following direct negotiations between Trump and South Korean President Lee Jae Myung. That agreement reduced US tariffs on Korean vehicles from 25% to 15% in exchange for Korean investment commitments, but has since become entangled in South Korean domestic political and legal debates.
South Korea’s government maintains the agreement was structured as a non-binding memorandum of understanding, though political pressure is now forcing reconsideration of that position. Both ruling and opposition parties have committed to expediting five bills that would enable the investments and other commitments Seoul made to Washington.
The automotive industry faces the greatest risk from Trump’s tariff threat, as it represents 27% of South Korean exports to America. Market reaction was immediate, with Korean carmaker stocks falling up to 5% before recovering partially as investors assessed the situation.
This tariff threat fits within Trump’s broader pattern of using trade policy as a diplomatic tool, including recent warnings to Canada about Chinese trade deals and to European nations regarding Greenland. Economists warn that the unpredictability of such announcements creates business uncertainty and market volatility regardless of whether specific threats are implemented.