The chairman’s mark of the fiscal 2027 National Defense Authorization Act, or NDAA, would amend a provision in the fiscal 2026 defense law that restricts the use of funds to reduce the number of U.S. troops stationed in or deployed to South Korea below 28,500.
Under the 2026 NDAA, funds authorized by that law cannot be used to cut the U.S. military presence in South Korea below the current level or to complete a transfer of wartime operational control of the South Korea-U.S. Combined Forces Command in a way that deviates from a bilaterally agreed plan, unless the defense secretary submits required certifications and assessments to Congress.
The 2027 House draft goes a step further by broadening the funding restriction. Instead of applying only to amounts authorized under the NDAA itself, the draft would prohibit the use of funds “authorized to be appropriated by this Act or otherwise made available for fiscal years 2026 or 2027” for such purposes.
The change appears aimed at closing a potential loophole that could allow the administration to use other defense funds to carry out troop reductions, even if NDAA-authorized funds were restricted. If enacted, the provision would make it harder for the executive branch to move forward with a unilateral or rapid reduction in U.S. Forces Korea without first going through congressional oversight procedures.
The provision comes amid lingering concerns in Seoul that the Trump administration could push for a reshaping of U.S. overseas military posture as part of its broader pressure campaign on allies to shoulder more defense costs and take on larger regional security roles.
“The U.S. will not be able to act entirely on its own,” said Koh Yu-hwan, a professor of North Korean studies at Dongguk University. “Given its strategic competition with China, it would be difficult for Washington to reduce U.S. Forces Korea significantly. It may be able to scale back some ground troops, but there is little reason to move them to Japan or Guam, especially when Camp Humphreys in Pyeongtaek is such an advanced and well-established base.”
Koh said Washington may still pressure Seoul over defense cost-sharing or other alliance issues, but the strategic value of the U.S. military presence in South Korea remains too important to abandon.
“For South Korea, even the symbolic presence of U.S. troops serves as a deterrent,” he said. “For the United States, there are few locations as strategically useful as South Korea when it comes to keeping China — and even Russia — in check.”
The House draft does not itself order the United States to maintain troops in South Korea permanently, nor does it eliminate the possibility of a reduction. But it would require the defense secretary, in consultation with senior military, diplomatic and intelligence officials, to certify that any reduction below 28,500 is in the national security interest of the United States and follows consultations with allies, including South Korea and Japan.
The required assessment would also have to analyze the impact of such a reduction on U.S., South Korean and Japanese security, U.S. deterrence, the defense posture of U.S. Indo-Pacific Command and the ability of American forces to carry out contingency plans, including operations beyond the Korean Peninsula.
That last point is drawing renewed attention after Gen. Xavier Brunson, commander of U.S. Forces Korea, recently described South Korea as a “dagger” in the heart of Asia from China’s strategic perspective.
His remarks underscored Washington’s growing view of the Korean Peninsula not only as a frontline against North Korea but also as a key strategic location in the wider Indo-Pacific theater. Brunson has also previously emphasized the need for closer operational links among South Korea, Japan and the Philippines, reflecting the U.S. military’s push to build a more networked regional deterrence posture.
For Seoul, the developments point to a two-sided challenge. On one hand, the House NDAA language could reassure South Korea by making abrupt U.S. troop cuts more difficult. On the other hand, the growing emphasis on the peninsula’s strategic value in a potential China-related contingency could fuel debate over how far South Korea should align with U.S. regional operations beyond deterring North Korea.
The Chinese Embassy in Seoul has strongly criticized Brunson's remarks, portraying South Korea and USFK as a forward base aimed at China, warning that he had “clearly crossed the line.”
The bill remains a draft and must still go through committee deliberations, House passage and negotiations with the Senate before becoming law. But the language offers an early signal that Congress is seeking to preserve oversight over U.S. force posture in South Korea as the Trump administration weighs broader changes to America’s global military footprint.
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