Creates a formal U.S.–Japan–Republic of Korea inter-parliamentary framework by directing the Secretary of State to seek a written agreement with Japan and the Republic of Korea within 180 days to establish a regular Inter‑Parliamentary Dialogue. If an agreement is reached, a U.S. Group of up to eight Members of Congress will be formed with rules for appointment, terms, meetings, leadership rotation, financial certification, limited acceptance of private gifts, and annual reporting of activities and expenditures to congressional committees.

Affirms the Sense of Congress that trilateral cooperation with Japan and the ROK should be strengthened to address regional challenges, advance maritime security, counter foreign information manipulation, and promote a free, open, inclusive, resilient, and healthy Indo‑Pacific, including regular leaders' meetings and a standing parliamentary channel for coordination.