Archive · 30 Sep 2026
Republican Lawmaker Urges Scrutiny of South Korea’s China Ties
A U.S. lawmaker is worried that South Korea is becoming closer to China.
He asked the U.S. government to watch this relationship more carefully.
He pointed to meetings between South Korean and Chinese leaders.
He also cited South Korean chip factories in China as a possible risk for technology supplies.
The lawmaker said South Korea may treat some Chinese online businesses more favorably than American companies.
South Korea said its alliance with the United States is still the most important part of its foreign policy.
South Korea also said it wants to manage its relationship with China.
The disagreement comes after recent tensions between Washington and Seoul.
The lawmaker wants a State Department briefing about the issue by October 31.
Representative John Moolenaar urged Secretary of State Marco Rubio to increase scrutiny of South Korea’s growing relationship with China.
Moolenaar cited closer leader-level contacts, South Korean semiconductor operations in China, and alleged unequal treatment of American companies.
South Korea’s foreign ministry reaffirmed that its alliance with the United States remains the cornerstone of its foreign policy.
Moolenaar warned that South Korea’s reluctance to become involved in a Taiwan Strait conflict could widen differences with Washington.
He requested a State Department briefing on South Korea-China relations by October 31.
- Who
- Representative John Moolenaar, Secretary of State Marco Rubio, the South Korean government, and the U.S. and Chinese governments.
- What
- Moolenaar urged the Trump administration to scrutinize South Korea’s warming ties with China and requested a State Department briefing.
- When
- The letter was sent on Tuesday and reported on September 30; the requested briefing is due by October 31.
- Where
- The concerns involve relations among the United States, South Korea, and China, including South Korean semiconductor operations in China.
- Why
- Moolenaar said closer Seoul-Beijing ties, technology investments in China, Taiwan policy, and alleged unequal treatment of U.S. companies could create risks for the United States.
Concerns About Seoul’s China Ties
South Korea’s Alliance-Based Approach
Strategic alignment
Concerns About Seoul’s China Ties
Moolenaar warned that closer leader-level ties between Seoul and Beijing could develop into a structural shift away from the United States.
South Korea’s Alliance-Based Approach
South Korea’s foreign ministry said the U.S.-South Korea alliance remains the cornerstone of its foreign policy while Seoul manages relations with China.
Taiwan Strait involvement
Concerns About Seoul’s China Ties
Moolenaar criticized South Korea’s reluctance to support a regional response to potential Chinese aggression against Taiwan.
South Korea’s Alliance-Based Approach
President Lee Jae Myung has said South Korea should avoid unnecessary involvement and respect other countries’ positions in the Taiwan Strait.
Business and technology rules
Concerns About Seoul’s China Ties
Moolenaar said South Korean semiconductor operations in China could expose allied supply chains to Chinese pressure and alleged that Chinese e-commerce platforms receive more lenient treatment than American firms.
South Korea’s Alliance-Based Approach
South Korea’s foreign ministry said its regulatory authorities treat all companies operating in the country fairly.
- Letter author
- Representative John Moolenaar, the Republican chair of the congressional committee focused on China
- Recipient
- Secretary of State Marco Rubio
- South Korean position
- The foreign ministry said the U.S.-South Korea alliance is the cornerstone of South Korea’s foreign policy.
- Technology concern
- Moolenaar cited Samsung’s plant in Xi’an and SK Hynix operations in Wuxi and Dalian.
- Taiwan concern
- Moolenaar said Seoul had effectively ruled out supporting a regional response to possible Chinese aggression against Taiwan.
- Requested action
- A State Department briefing on South Korea-China relations by October 31
- Related investment
- South Korea has pledged hundreds of billions of dollars in investments based in the United States.