NextFin News - A diplomatic rift between Seoul and Washington has widened into a rare public confrontation as South Korean lawmakers formally condemned what they described as "unacceptable interference" by U.S. Republican legislators into domestic regulatory probes. The friction centers on Coupang Inc., the New York-listed e-commerce giant currently facing intense scrutiny from South Korean authorities over a massive data breach and allegations of algorithm manipulation. National Assembly Speaker Woo Won-shik led the charge on Friday, dismissing claims from 54 U.S. lawmakers that the investigations constitute "discrimination" against American firms.
The escalation follows a letter sent by the Republican Study Committee to South Korean Ambassador Kang Kyung-wha, which urged Seoul to halt "targeting" American companies. The letter specifically cited Coupang, whose South Korean operations are the backbone of the country’s digital retail economy. Speaker Woo, a veteran politician known for his focus on labor rights and economic sovereignty, countered that the U.S. position ignores the rule of law. "If Korean companies did the same things in the U.S., would the U.S. let it go?" Woo remarked during an SBS radio interview, framing the American pressure as a violation of South Korea's regulatory independence.
The stakes have been further raised by reports in South Korean media suggesting that Washington officials may have linked the legal safety of Coupang Chairman Kim Bom—a U.S. citizen—to the continuation of high-level security talks. While the South Korean Foreign Ministry has not confirmed such a linkage, it issued a pointed statement on Thursday asserting that the Coupang probe is being conducted in "strict accordance with domestic laws and due process." The ministry’s insistence on non-discrimination highlights the delicate balancing act Seoul must perform under the administration of U.S. President Trump, where trade and security interests are frequently intertwined.
Coupang has moved to distance itself from the political firestorm. In a statement released on April 24, the company denied allegations that it lobbied U.S. officials to pressure the South Korean government. The firm clarified that its recent U.S. filings, which showed significant lobbying expenditures, were focused on artificial intelligence innovation, cross-border commerce, and investment plans in Taiwan and Japan rather than seeking intervention in the data leak investigation. Despite these denials, the perception of U.S. political muscle being flexed on behalf of a private corporation has touched a nerve in Seoul’s National Assembly.
The dispute arrives at a sensitive moment for the U.S.-South Korea alliance. With U.S. President Trump’s administration emphasizing "America First" trade policies, South Korean regulators are increasingly wary of being seen as soft on foreign-listed entities that dominate local markets. The Fair Trade Commission and police are currently investigating whether Coupang’s search algorithms unfairly prioritized its private-label products over third-party sellers, a probe that mirrors antitrust actions taken against tech giants in both the U.S. and Europe. By framing these investigations as discriminatory, U.S. lawmakers have effectively turned a corporate compliance issue into a test of bilateral diplomatic resilience.
Market analysts suggest the friction could have broader implications for foreign investment. While Republican lawmakers argue that aggressive regulation might deter U.S. capital, South Korean legislators maintain that exempting U.S.-linked firms from local consumer protection laws would create a "reverse discrimination" against domestic players. The National Assembly’s vocal pushback indicates that Seoul is unlikely to back down on the Coupang probe, even as it seeks to maintain stable ties with the Trump administration. The standoff now rests on whether the U.S. executive branch will adopt the aggressive stance of the Republican legislators or allow the legal process in Seoul to run its course.
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