US filing: South Korea, Samsung, and SK Hynix ask the US to review its chip subsidy criteria, concerned over the impact on limiting chip investment in China
Context & Ripple Effects
This filing is the next step in a squeeze that has been tightening since the US Chips and Science Act inserted 'guardrails' against China expansion, prompting Samsung and SK Hynix to rethink their China exposure as early as 2022. Weeks before this request, the Biden administration had already asked Seoul to keep the two chipmakers from filling any market gap if Beijing bans Micron, making clear Washington intended to direct their China strategy, not just fund their US one.
By formally asking the US to review the subsidy criteria, South Korea is moving from quiet diplomacy to an on-the-record objection — notable from a government that has historically avoided picking sides but has been tilting toward Washington on chips. What is at stake is concrete: SK Hynix's Dalian NAND plant, acquired from Intel for $9B in 2020, already sits in limbo under US export rules, and Samsung and SK Hynix together operate the bulk of their memory capacity in China.
First-order effects
- Samsung and SK Hynix face a direct trade-off: accepting US subsidy money with guardrails attached would freeze expansion of their existing China fabs, which produce a large share of their NAND and DRAM output.
- South Korea's government is now formally lobbying Washington on its companies' behalf, turning a bilateral subsidy program into a diplomatic negotiation with Seoul.
Second-order effects
- If the guardrails hold as written, Micron and other rivals without major China memory operations gain a relative cost and capacity advantage inside China, while Samsung and SK Hynix must weigh shifting investment to US or Korean sites.
- Seoul's objection sets up friction inside the US-Korea alliance itself: Washington wants aligned chip policy, but the two companies whose capacity it most wants onshore are the ones most exposed in China.
Third-order effects
- The pattern points toward a structural split of the memory industry into US-aligned and China-contained production footprints, with subsidy terms — not market demand — deciding where the next fabs get built.
- The trajectory that began with this review request runs through to Washington later revoking the equipment waivers for Samsung, SK Hynix, and Intel's China plants, suggesting lobbying can slow but not stop the tightening.
The trend: US industrial policy is progressively forcing allied chipmakers to choose between American subsidies and their Chinese manufacturing bases, with each round of rules narrowing the room Seoul's champions have to operate in both markets.