A substantive modification to S. 4600. v2 refines the diplomatic engagement strategy for the South China Sea, notably by explicitly including Taiwan in collective engagements and adding a new Section 6 to clarify the bill's adherence to the One China Policy. Minor textual adjustments and grammatical corrections are also present throughout the strategy elements.
South China Sea Strategy Act of 2026
- Sponsor
- Sen. Duckworth, Tammy [D-IL]
- Committees
- Foreign Relations Committee (primary)
- Last action
- Jul 27, 2026
Bottom line
This bill mandates a formalized, coordinated U.S. diplomatic strategy to counter China's influence and ensure freedom of navigation in the South China Sea through enhanced engagement with regional partners.
What it actually does
This bill mandates the Secretary of State, in consultation with the Secretary of Defense, to develop and submit a comprehensive diplomatic engagement strategy for the South China Sea. The strategy aims to coordinate U.S. efforts with allies and partners, including littoral states and Taiwan, to address security, diplomatic, legal, and economic matters, counter China's unilateral actions, and manage crises in the region.
Proponents argue
Proponents argue that a clear, unified strategy is essential to protect U.S. economic and security interests in the South China Sea, maintain regional stability, and uphold international law against China's assertive claims. They believe it will strengthen alliances, deter aggression, and provide a framework for peaceful dispute resolution and crisis management.
Opponents contend
Opponents might argue that such a strategy could be perceived as overly provocative by China, potentially escalating tensions in an already volatile region. Some might also contend that it could overcommit U.S. resources or draw the U.S. into disputes that are primarily regional, or that existing diplomatic efforts are sufficient without a new legislative mandate.
The bill is concise and straightforward, allowing for a quick read and easy comprehension of its core directives.
Section 2
Codification of U.S. Policy on South China Sea
This section formally states the United States' policy regarding the South China Sea. It emphasizes supporting freedom of navigation and overflight, committing to a rules-based approach for maritime disputes, countering China's unilateral actions, and engaging with allies and partners for a coordinated diplomatic approach to protect U.S. interests and ensure the safety of U.S. citizens.
Supporters argue
Supporters argue this codifies existing U.S. interests and provides a clear, consistent foundation for diplomatic and security engagement, signaling resolve to allies and adversaries alike.
Critics contend
Critics might argue that merely stating policy without concrete actions could be seen as symbolic, or that explicitly naming the PRC as undermining stability could further inflame tensions without providing new tools for de-escalation.
Tradeoffs
This provision balances the need for clear policy articulation with the potential for increased diplomatic friction with China.
Section 3(a)
Mandate for a Comprehensive Diplomatic Strategy
This subsection requires the Secretary of State, in consultation with the Secretary of Defense, to submit a 'Strategy for Diplomatic Engagement on the South China Sea' to the appropriate congressional committees within 180 days of the Act's enactment. The primary goal is to ensure the U.S. Government operates strategically and efficiently in its engagement on South China Sea matters.
Section 3(b)
Detailed Requirements for the Diplomatic Strategy
This subsection specifies the detailed components that must be included in the diplomatic strategy. These elements cover overarching goals, designation of lead offices, analysis of existing mechanisms, plans for deepening bilateral engagement with littoral states, increasing collective engagements (including Taiwan), and coordination for crisis management below armed conflict. Key themes for collective engagement include bolstering defense, maritime law enforcement, countering grey-zone tactics, managing disputes, crisis response, building resilience to malign influence and economic coercion, and addressing direct risks to U.S. interests.
Section 4
Implementation and Resource Identification
This section requires the Secretary of State to identify any necessary programs, policies, or budgetary resources needed to support the strategy's implementation for fiscal years 2027, 2028, and 2029. This identification must be submitted to the appropriate congressional committees within 360 days of the Act's enactment. Additionally, a briefing to these committees on the strategy's implementation is required 30 days after the resource assessment submission.
Section 6
Clarification on One China Policy
This section explicitly states that nothing in the Act may be construed as a change to the United States' One China Policy. It further clarifies that this policy is guided by the Taiwan Relations Act, the three United States-People's Republic of China Joint Communiques, and the Six Assurances. This is a crucial clarification given the bill's directive to include Taiwan in collective engagements.
Explicitly states that the Act does not change the U.S. One China Policy, which is guided by the Taiwan Relations Act, the three U.S.-PRC Joint Communiques, and the Six Assurances.
Section 6
Why it matters:This is standard legislative practice for clarifying the intent of a bill regarding existing law or policy, especially on sensitive foreign policy matters. It is likely intended to preempt diplomatic objections from the People's Republic of China.
Case for: Supporters argue it's crucial for diplomatic stability, ensuring that the bill's directives for engaging Taiwan do not inadvertently signal a shift in U.S. policy that could provoke China or destabilize cross-strait relations.
Case against: Critics might argue that while intended to reassure, the very necessity of this clause underscores the inherent tension in the bill's approach, and that the PRC may still perceive increased engagement with Taiwan as a challenge, regardless of this disclaimer.
Estimated impact: Significant diplomatic impact, potentially mitigating negative reactions from the PRC while reassuring allies about the consistency of U.S. policy.