US-China tech clash leaves South Korea balancing strategic and economic stakes

Just four days after last Monday’s summit, Washington punctured the glow of alliance diplomacy and reminded Seoul where power is measured.

On Friday, the Donald Trump administration revoked the “validated end-user,” or VEU, status of Samsung Electronics and SK hynix, a technical detail buried in the Commerce Department’s Federal Register. In reality, it escalates the US-China technology rivalry, leaving South Korea’s semiconductor giants squarely caught in the middle.

For years, VEU status allowed the two Korean chipmakers to import US manufacturing equipment into their Chinese plants without the burden of securing individual licenses. This smoothed supply chains and offered some predictability amid constantly shifting export rules.

Come January, however, every shipment of US machinery to Samsung’s Xi’an NAND facility or SK hynix’s DRAM plant in Wuxi will require case-by-case approval. Expansion or technology upgrades will be off the table. The Commerce Department has said it will permit “maintenance of current operations” — hardly reassuring when approvals may be delayed, contested or denied outright.

The stated purpose is to close a “Biden-era loophole” that allegedly has disadvantaged American firms. The rhetoric of leveling the playing field, however, masks a deeper logic: Washington is determined to block advanced semiconductor know-how from reaching China, whether through US companies or via allied partners.

For Samsung Electronics and SK hynix, the implications are immediate and troubling. Hundreds, if not thousands, of additional license applications may be required each year, bringing higher administrative costs and operational uncertainty. The timing of approvals could jeopardize production schedules, especially for memory chips where margins are thin and demand is volatile. In an industry where speed defines competitiveness, monthslong waits could be crippling.

The Lee Jae Myung administration, briefed in advance, has pledged to minimize the fallout through talks with Washington. Diplomacy may soften the blow, but the underlying reality remains: Decisions determining the viability of multibillion-dollar investments in China will be made in Washington, not Seoul. For a country whose economy depends on semiconductors more than oil exporters rely on crude, that is a sobering fact.

The broader backdrop is equally unsettling. Since early this year, the Trump administration has rolled out a near-weekly drumbeat of new or revised semiconductor restrictions, coupled with threats of tariffs as high as 100 percent. Nvidia’s export licenses for downgraded AI chips to China were briefly blocked, then approved after Washington extracted a fee. Even Intel has not escaped turbulence.

For South Korea, the unpredictability is a strategic headache. Its semiconductor frontrunners depend on both the US and China as indispensable markets. The former provides critical tools and political security, the latter scale and revenue. Choosing between them is neither desirable nor feasible. Yet Washington’s tightening grip on licensing is eroding the middle ground.

The temptation in Seoul will be to seek shortcuts: lobbying for exemptions, delaying compliance or treating the issue as another round of tactical trade friction. That would be a mistake. The lesson of the VEU revocation is not merely that American policy is unpredictable, but that the space for hedging is narrowing rapidly. If Korean firms are to stay competitive, they must invest in keeping Chinese operations technologically lean while doubling down on cutting-edge production at home and in friendlier jurisdictions.

Some experts suggest reducing the overall share of manufacturing in China. That may be sensible in the long run, but it cannot be done overnight. What is now required is for government and industry to craft coordinated strategies that anticipate sustained turbulence, rather than transient shocks.

In the AI era, semiconductors are no longer just a trade good; they are strategic assets, bargaining chips and, at times, hostages. The chips will continue to fall — but rarely in straight lines.


khnews@heraldcorp.com