Summary of SRES 409: Resolution Recognizing the 74th Anniversary of the Mutual Defense Treaty

Bill Number: SRES 409

Introduced: September 18, 2025

Status: Reported by the Committee on Foreign Relations without amendment

Classification: Resolution

Purpose and Intent

The resolution commemorates the 74th anniversary of the Mutual Defense Treaty between the United States and the Philippines. It aims to reaffirm the strong bilateral security alliance in light of increasing aggression and political maneuvers by the People's Republic of China (PRC) in the South China Sea.

Key Provisions

The resolution includes several important affirmations and calls to action:

1. Celebration of the Treaty: Acknowledges the historical significance of the Mutual Defense Treaty and the enduring alliance between the U.S. and the Philippines.

2. Appreciation for Philippine Trust: Recognizes the trust and support of the Philippine people for increased defense cooperation and U.S. military presence in their country.

3. Support for Philippine Resistance: Commends the determination of the Philippine Armed Forces to resist coercion from the PRC.

4. Condemnation of PRC Actions: Condemns the PRC's unprovoked aggression and political tactics in the South China Sea, particularly regarding territorial claims.

5. Rejection of Coercive Plans: Rejects the PRC's plans to establish a national nature reserve at Scarborough Reef, which is viewed as a destabilizing action.

6. Reaffirmation of Defense Obligations: Confirms that Article IV of the Mutual Defense Treaty applies to armed attacks against the Philippines' military and public vessels in the South China Sea.

7. Recognition of Sovereignty: Considers PRC aggression in the Philippines' exclusive economic zone a direct threat to its sovereignty.

8. Call for Presidential Action: Urges the U.S. President to take necessary actions to counter PRC aggression and support Philippine self-defense.

9. Commitment to Security Cooperation: Supports deepening security cooperation with the Philippines, including defense modernization and military exercises.

10. Support for International Partnerships: Encourages other nations to strengthen their political and security ties with the Philippines.

11. Regional Cooperation: Commits to enhancing cooperation among the U.S., Philippines, Japan, South Korea, and Australia.

12. Reaffirmation of Maritime Rights: Reiterates the U.S. commitment to freedom of navigation and respect for maritime rights under international law in the Indo-Pacific region.

Affected Parties

• United States: The resolution emphasizes the U.S. commitment to its allies and regional stability.
• Philippines: The resolution directly supports the Philippine government and military in their defense efforts against external aggression.
• People's Republic of China: The resolution addresses the actions of the PRC, condemning its aggressive tactics in the region.

Legislative Timeline

• September 18, 2025: Introduced in the Senate and referred to the Committee on Foreign Relations.
• October 22, 2025: Ordered to be reported favorably without amendment.
• October 30, 2025: Reported by Senator Risch without amendment and placed on the Senate Legislative Calendar.

Sponsors

The resolution is sponsored by Pete Ricketts and has multiple cosponsors, including notable senators such as Michael Bennet, Deb Fischer, Rick Scott, and Timothy M. Kaine.

This resolution serves as a formal recognition of the longstanding alliance between the U.S. and the Philippines while addressing current geopolitical tensions in the South China Sea.