South Korea has recently sought to strengthen its ties with the U.S. administration through joint industrial investments, particularly in the electric vehicle battery manufacturing sector, as part of massive projects across several American states. However, recent events have exposed the fragility underlying this cooperation.
On September 4, 2025, federal immigration authorities and Homeland Security agencies carried out a raid at the construction site of a Hyundai–LG battery plant in Bryan County, Georgia. Nearly 475 workers were arrested, including more than 300 South Korean migrants holding valid work visas. They were accused of exceeding the scope of their authorized activities under their visas, sparking a wide legal and political debate about how immigration laws are interpreted in such cases.
Although the detained workers were later released and returned to Seoul, the incident has raised serious concerns about the viability of South Korea’s commercial cooperation with Washington.
Repercussions of the Crisis
The immigration and work visa measures taken by President Trump’s administration are expected to have multiple consequences on U.S.–South Korea relations, summarized as follows:
1. Damage to the U.S.–South Korea Trade Agreement
In July 2025, Washington and Seoul successfully reached a trade agreement that included reducing tariffs on Korean vehicles from 25% to 15%, as well as lowering reciprocal tariffs to 15% instead of the 25% initially imposed by the Trump administration. The deal also included Seoul’s commitment to implement $350 billion worth of investments across various sectors, including technology.
However, the recent raid may cast a shadow over the future of these investments. South Korean President Lee Jae-myung stated that the raids targeting Korean workers would have negative repercussions on future investments, noting that South Korean companies “will hesitate” to inject new capital into the U.S. under such risks.
In response, South Korean Foreign Minister Cho Hyun traveled to Washington to discuss the functioning of the U.S. visa system for investment-related workers, as the incident ignited heated debate within South Korea.
2. Seoul’s Growing Reluctance to Invest in the United States
South Korea remains a key trading partner for the United States and could play a major role in fulfilling President Trump’s goal of attracting more foreign investment and creating new jobs domestically. However, the administration’s restrictive policies—tightened visa rules and repeated raids on strategic factories such as the Georgia plant—have created an atmosphere of uncertainty among investors.
The joint LG Energy Solution–Hyundai Motor project represented a vital undertaking, yet the volatile nature of U.S. enforcement policies makes it difficult for investors to trust the stability of the business environment. Official U.S. explanations claimed that the raids were conducted due to alleged employment of “unauthorized labor” and misuse of corporate benefits.
In October 2025, however, both sides reached an agreement allowing South Korean workers to participate in U.S. factory construction projects under a visa waiver program specific to industrial sites. They would also be eligible for short-term B-1 work visas, and a dedicated office would be opened at the U.S. Embassy in Seoul to facilitate the issuance of work visas for South Korean engineers.
3. Intensified Negotiations to Secure Mutual Gains
Although the situation has not escalated into an open diplomatic crisis, it has accelerated bilateral negotiations. South Korea’s chief trade negotiator continued talks in Washington regarding the $350 billion investment plan.
Meetings were held between U.S. Commerce Secretary Howard Lutnick and South Korean Industry Minister Kim Jong-kwan, as well as between South Korean Trade Minister Yoo Han-koo and U.S. Trade Representative Jamison Greer in September 2025. Discussions focused on reducing tariffs on Korean cars and auto parts, which remain higher than those applied to Japanese products.
Notably, President Trump has yet to sign the executive order lowering tariffs to 15%. While Seoul seeks to resolve this issue, Washington is pressing for an increase in Korean investments to $550 billion, matching Japan’s commitment — a demand Seoul deems unrealistic given the vast difference in economic scale. Some reports suggest that South Korea might prefer maintaining 25% tariffs rather than committing to such large-scale investments that could harm its GDP. As of October 2025, no detailed trade agreement had been finalized, and further negotiations are expected to take time.
4. Rising Anti-American Sentiment in South Korea
President Trump’s immigration policies and rhetoric toward South Korea and other nations have fueled growing resentment among the South Korean public toward the United States. This sentiment is already influencing major corporations’ investment plans.
For example, Hyundai has invested approximately $20.5 billion and planned to add another $21 billion between 2025 and 2028, leveraging tax incentives introduced under former President Joe Biden’s CHIPS and Science Act. However, Trump’s tariff policies have imposed additional costs exceeding $600 million during the second quarter of 2025, undermining expansion efforts.
The harsh treatment of Korean workers in the U.S. has also discouraged engineers and technicians from seeking employment there, further dampening investment enthusiasm.
5. Strained Ties with a Key Indo-Pacific Ally
Under a long-standing defense treaty, South Korea hosts one of the largest U.S. military bases outside American territory, with around 28,500 U.S. troops stationed there. This presence serves as a crucial deterrent against North Korea’s nuclear threat.
However, recent U.S. policies could prompt Seoul to diversify its international alliances, potentially weakening U.S. influence in the Indo-Pacific region — a strategic zone where Washington considers China its primary rival.
6. Weakened U.S. Semiconductor Leadership
Since the Biden administration, the U.S. has pursued technological self-sufficiency in semiconductors, investing $52 billion to reduce reliance on Asian supply chains and challenge China, which controls 77% of the global battery production market.
Yet, the Trump administration’s immigration policies risk undermining cooperation with South Korea in this vital sector. Prolonged visa processing times — ranging from six to eighteen months — are driving companies to seek unsuitable alternatives, ultimately weakening America’s technological leadership.
Temporary Containment
In conclusion, President Trump’s strict immigration policies contradict his stated economic ambitions at home. They also undermine the image of the United States as the “land of opportunity” that welcomes global talent to contribute to its progress.
For now, South Korea is unlikely to abandon its strategic partnership or trade ties with Washington, given the critical importance of the American market for Korean technology exports. However, Seoul appears to be adopting a “temporary containment” strategy in dealing with the Trump administration until his term ends, given the unpredictability of his decisions.
In the long run, South Korean investment in the United States will be recalibrated with greater caution, factoring in the risks posed by changing immigration laws and enforcement practices that directly harm investors — all while President Trump continues his efforts to weaken federal institutions and remove officials who oppose his agenda.
