South Korea Faces New Trade Pressure Under a Potential Trump Return

The specter of a second Trump administration is casting a long shadow over global trade dynamics, with few nations watching more closely than South Korea. Having navigated a tumultuous trade relationship with the United States during Donald Trump’s first term—culminating in a revised bilateral trade deal—Seoul now braces for a potential new wave of pressure. The prospect of “America First” policies returning to the White House suggests that South Korea’s export-driven economy could face significant headwinds, with key industries from automobiles to semiconductors in the crosshairs.

A Legacy of Friction: The US-Korea Free Trade Agreement (KORUS)

To understand the future, one must first look to the recent past. The US-Korea Free Trade Agreement (KORUS), initially implemented in 2012, became a prime target for President Trump, who famously labeled it a “job-killing” deal and a “horrible” agreement. After threatening outright withdrawal, his administration forced a renegotiation in 2018. The revised deal included concessions from South Korea, such as:

• Doubling the annual quota of US car imports meeting US safety standards from 25,000 to 50,000 per manufacturer.
• Extending the 25% US tariff on Korean pickup trucks until 2041.
• Limitations on Korean currency devaluation and provisions to reduce non-tariff barriers in auto trade.

While the agreement prevented an all-out trade war, it set a precedent. It demonstrated a willingness by the US to leverage its security alliance to extract economic concessions, a tactic that could be employed even more aggressively in a future Trump term.

Potential Flashpoints in a “Trump 2.0” Trade Agenda

A second Trump administration is expected to pursue an even more assertive and unilateral trade policy. For South Korea, several critical areas are likely to face intense scrutiny and potential new tariffs or quotas.

1. The Automotive Sector: A Perennial Target

Automobiles remain the single largest source of the US trade deficit with South Korea. Despite the KORUS revisions, Hyundai-Kia has massively increased its US market share, partly through a strategic pivot to SUVs and electric vehicles (EVs), and through significant investment in new US manufacturing plants in Georgia and Alabama.

However, these investments may not provide sufficient insulation. Trump has floated the idea of universal baseline tariffs of 10% or more on all imports. Such a measure would directly hit Korean-built vehicles, undermining their price competitiveness. Furthermore, the US could launch new national security investigations (under Section 232 of the Trade Expansion Act) into auto imports or EV components, potentially leading to additional, targeted tariffs.

2. Steel and Beyond: The Return of National Security Tariffs

In 2018, South Korea was hit with a 25% tariff on steel exports to the US under Section 232. It managed to secure an exemption by agreeing to a strict quota system, limiting its volume to about 70% of its average annual exports from 2015-2017. In a new administration, these quotas could be tightened, or the exemption could be revoked entirely. Other strategic sectors, such as aluminum, machine tools, or even shipbuilding, could face similar “national security” tariffs, framed as protecting critical US industries.

3. The Semiconductor Dilemma: A Double-Edged Sword

The landscape for semiconductors is more complex. While the US is keen to on-shore advanced chip production and limit China’s access to technology, it also relies heavily on Korean giants Samsung and SK Hynix. The CHIPS Act incentives have successfully attracted massive Korean investment in US fabs. However, trade pressure could emerge in subtler ways:

• Demands for stricter technology-sharing or licensing terms.
• Pressure to limit chip exports or expansions in China, potentially disrupting global supply chains that Korean firms dominate.
• Potential scrutiny over alleged “dumping” of legacy chips, where Korean firms hold significant market share.

The US may treat the semiconductor alliance as both a strategic necessity and an economic vulnerability to be managed—and potentially leveraged.

The Geopolitical Tightrope: Security vs. Economics

This is the core of South Korea’s challenge. The US is its most crucial security ally, with 28,500 troops stationed on the peninsula as a deterrent against North Korea. Historically, this alliance provided a protective umbrella for economic growth. Under Trump’s transactional foreign policy, that dynamic is inverted; the security guarantee itself becomes a point of leverage in trade negotiations.

Seoul would face an agonizing balancing act: how to respond to aggressive US trade demands without undermining the fundamental security partnership. Pushing back too hard could invite accusations of being an “ungrateful ally” and threats to reduce troop levels or change cost-sharing agreements (the Special Measures Agreement). Acquiescing too readily could damage key domestic industries and political stability.

Strategic Responses and Preparations

South Korea is not a passive observer. The government and its *chaebols* (large conglomerates) are already formulating strategies to mitigate these risks:

• Accelerating US Onshoring: Companies like Hyundai, Samsung, and LG are fast-tracking multi-billion-dollar manufacturing investments in the US. Local production is the most effective shield against import tariffs.
• Diversification of Markets: While difficult to replace the US market, efforts to deepen trade ties with the EU, ASEAN, and other middle-power nations will intensify.
• Diplomatic Engagement: Seoul will likely ramp up lobbying efforts in Washington, emphasizing its role as a strategic technology partner and a model ally, hoping to secure exemptions or favorable terms.
• WTO Dispute Settlement: While less effective given the US’s blocking of the WTO Appellate Body, South Korea may still pursue multilateral challenges to unilateral US tariffs.

Conclusion: Navigating an Era of Transactional Alliances

The potential return of Donald Trump to the White House signals a probable return to a more confrontational and bilateral approach to trade. For South Korea, the lessons of 2017-2020 are clear: the economic pillar of the alliance is no longer stable ground. The country must prepare for a scenario where its security partner is also its most demanding trade negotiator.

The coming years may require a fundamental recalibration of one of Asia’s most successful economic models. Surviving—and thriving—in this new environment will depend on strategic agility, accelerated investment in key ally markets, and a delicate diplomatic dance to preserve the indispensable, yet increasingly conditional, alliance with the United States. The pressure is already mounting, and South Korea’s economic planners are undoubtedly running the scenarios.