PolicyBrief
S.RES. 409
119th CongressOct 22nd 2025
A resolution recognizing the 74th anniversary of the signing of the Mutual Defense Treaty between the United States and the Philippines and the strong bilateral security alliance between our two nations in the wake of escalating aggression and political lawfare by the People's Republic of China in the South China Sea.
AWAITING SENATE

This resolution recognizes the 74th anniversary of the U.S.-Philippines Mutual Defense Treaty while strongly condemning escalating Chinese aggression in the South China Sea and affirming the enduring security alliance.

Pete Ricketts
R

Pete Ricketts

Senator

NE

LEGISLATION

US Resolution Marks 74 Years of Philippines Defense Treaty, Condemns China's South China Sea Aggression

This Congressional resolution is essentially a strong diplomatic letter affirming the United States’ security commitment to the Philippines on the 74th anniversary of their Mutual Defense Treaty. It doesn't create new laws or spend new money, but it lays down a firm marker: the U.S. views the 1951 treaty and the more recent Enhanced Defense Cooperation Agreement (EDCA) as absolutely foundational to stability in the Pacific.

The core of the resolution is a full-throated condemnation of the aggressive actions taken by the People's Republic of China (PRC) in the South China Sea. Congress specifically calls out the PRC's repeated use of water cannons, military-grade lasers, and dangerous maneuvers against Philippine civilian and military vessels, citing specific incidents like the June 17, 2024, clash that injured a member of the Armed Forces of the Philippines. For the average person, this means the U.S. is publicly taking a side in a major geopolitical dispute, signaling that the rules of international maritime law matter.

The Fine Print of the Mutual Defense Pact

One of the most important parts of this resolution is the clear statement about what the treaty actually covers. It reaffirms that Article IV of the Mutual Defense Treaty applies to armed attacks against Philippine public vessels, aircraft, and the Armed Forces—including the Coast Guard—anywhere in the South China Sea. It then declares that aggression by the PRC within the Philippines' internationally recognized exclusive economic zone (EEZ) is considered a direct assault on Philippine sovereignty.

Think of it this way: the U.S. is clarifying the insurance policy. If a Philippine Coast Guard ship—which is often the target of Chinese aggression—is attacked while operating in the Philippines' own waters, the U.S. is confirming that this triggers the defense treaty. This removes any ambiguity for both the Philippines and the PRC, which is a major move in terms of military deterrence.

Deepening the Alliance: What it Means for Taxpayers

The resolution supports deepening security cooperation through advancing Philippine defense modernization, enhancing military exercises like Balikatan, and increasing joint patrols. While this is great news for the alliance and regional stability, it has a few practical implications back home. When Congress supports 'advancing Philippine defense modernization' and 'enhancing interoperability,' it means more resources, training, and potentially advanced military equipment flowing to the region. This increased operational tempo and deployment of advanced capabilities, like the Navy-Marine Expeditionary Ship Interdiction System (NMESIS) mentioned in the bill, translates directly into higher costs for U.S. taxpayers.

There is also a section urging the President to continue taking “appropriate and necessary actions” in response to future escalations. This language is pretty vague. While it gives the Executive Branch flexibility to respond quickly, it’s a broad grant of authority that doesn't define clear thresholds for what those “necessary actions” might be. For busy people, this means trusting that future presidential administrations will exercise this broad discretion responsibly, especially given the increased risk of direct confrontation that comes with closer military integration.

Ultimately, this resolution is less about changing daily life in the U.S. and more about managing global risk. It’s Congress confirming that the U.S. is fully committed to a strategic ally, which aims to preserve freedom of navigation—a bedrock principle that keeps global trade routes open and functioning—but this commitment comes with the potential for increased military spending and a heightened diplomatic posture toward the PRC.