A new group of eight members of Congress would meet at least once a year with lawmakers from Japan and South Korea to coordinate on security and regional issues. The bill formalizes cooperation that started at the 2023 Camp David summit so it continues regardless of who is in charge.
Modern Action explains what the legislation does, helps you choose whether to support, oppose, or ask for changes, and drafts a message tied to the bill, your stance, and the elected officials who can act on it.
US-Japan-ROK Trilateral Cooperation Act is a Senate bill in committee. The latest recorded action: Received in the Senate and Read twice and referred to the Committee on Foreign Relations.
Latest action on H.R. 3429: Received in the Senate and Read twice and referred to the Committee on Foreign Relations.
Who this affects: This bill most directly affects members of Congress who would serve on the new dialogue group, as well as U.S. diplomats who would negotiate the founding agreement. More broadly, it could shape how the U.S. coordinates with Japan and South Korea on security and economic issues that affect people across the Indo-Pacific region.
Why this matters: Right now, cooperation between the U.S., Japan, and South Korea depends heavily on personal relationships between presidents and prime ministers. When leaders change, momentum can stall. This bill tries to lock in regular cooperation at the legislative level so that shared work on security, technology, and regional stability does not reset every time there is an election.
You do not have to start with a blank letter. Modern Action turns the bill, your position, and the relevant congressional context into a message you can edit and send. The goal is to make contacting Congress clear, specific, and useful without forcing you to parse bill text or figure out the right office on your own.
Officially: US-Japan-ROK Trilateral Cooperation Act
A new group of eight members of Congress would meet at least once a year with lawmakers from Japan and South Korea to coordinate on security and regional issues. The bill formalizes cooperation that started at the 2023 Camp David summit so it continues regardless of who is in charge.
Use this page to support, oppose, or ask Congress to amend HR3429. Modern Action explains what the bill does, helps identify the right senators or representative, and drafts a bill-specific message you can edit and send.
Where it stands
Sitting in Foreign Relations
No vote scheduled. Constituent contact is what moves bills out of committee.
↓ Why your message matters here
This bill is sitting in committee with no scheduled vote — which means a small number of constituent messages can decide whether it moves forward or quietly dies.
Enter your ZIP to see how your senators and member of Congress have voted, sponsored, or spoken on this bill.
The debate
Where this bill is in the process
Introduced
Introduced in House
House Committee
Under House committee consideration
House Floor Vote
Voted on by House
Passed House
Approved by House
Senate Review
Sent to Senate for consideration
Latest: Received in the Senate and Read twice and referred to the Committee on Foreign Relations. (6/9/2026)
Passed Both Chambers
Approved by both House and Senate
Signed into Law
Signed by the President
For more detail
Choose one clear position: support, oppose, or amend. Then pick any reasons or personal context you want included. Modern Action uses that input and the bill context to draft a message you can edit and send.
Congressional offices prioritize messages from their own constituents. Modern Action uses your address to route the drafted message to your senators when that is the most relevant target for this bill.
The draft includes the bill number, your position, the reasons you selected, any personal context you added, and a direct ask such as voting yes, voting no, cosponsoring, opposing, or seeking changes. You stay in control because you can edit the message before sending.
This page gives you an opportunity to support, oppose, or ask for changes to US-Japan-ROK Trilateral Cooperation Act, then contact the elected officials who can act. Modern Action drafts the message from your position and the reasons you select.
Modern Action keeps the action tied to the bill itself: what it does, where it is in the process (committee), which office can still act, and what ask belongs in the message.
You are not starting from a blank form. Modern Action drafts the message around HR3429, your stance, and the reasons you choose, then lets you edit and send when ready.
