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Contact Congress about H.R. 3429: 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.

Modern Action explains legislation in plain English, 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.

Key provisions in H.R. 3429

  • The Secretary of State, working with Congress, would negotiate a written agreement with Japan and South Korea to launch a three-country lawmaker dialogue.
  • A U.S. group of up to eight members of Congress would represent the United States once the agreement is in place.
  • Each of the four top congressional leaders would appoint two members, and at least one from each pair must serve on a foreign affairs committee.
  • Members of the U.S. group would serve two-year terms.
  • The group must try to meet at least once a year with lawmakers and staff from Japan and South Korea, and can invite other countries if all three governments agree.

How Modern Action helps you take action on H.R. 3429

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.

Questions people ask about H.R. 3429

What is H.R. 3429?
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.
How do I support or oppose H.R. 3429?
Choose support, oppose, or ask for changes on Modern Action. The action flow drafts the message for you and keeps the wording tied to this bill.
Who should I contact about H.R. 3429?
Modern Action uses your location to route the action to the congressional offices relevant to the bill and your representation.
Can Modern Action explain H.R. 3429 before I act?
Yes. Modern Action gives you a plain-English summary, current status, and action context before you send anything.