South Korean President Lee is expected to visit the US and Mexico between September 21st to 27th

Visits of this kind from a South Korean leader to Washington have historically served as staging for two parallel agendas: the alliance track, covering deterrence posture and cost-sharing, and the economic track, covering tariff arrangements, semiconductor supply chains and Korean corporate investment commitments in the US. The Mexico leg is a newer and less patterned feature; recent Korean diplomacy has used Latin American stops to court battery, mining and nearshoring ties, and any commercial MoUs signed there tend to matter for the autos and battery peer set rather than for macro. The market-relevant precedent is that these trips rarely move FX or rates on the announcement; re-pricing, when it comes, has arrived through the joint statement language on trade and through any headline-grabbing investment pledges from the chaebol contingent that typically travels with the delegation. The tells worth watching are whether the visit is framed as a summit with deliverables or a courtesy call, who accompanies the president from the business community, and whether tariff or defence cost-sharing language surfaces in the run-up. As scheduled diplomacy rather than an event, the signal is preparatory; the substance lands in the communiques.