The US Capitol at sunset in Washington, DC, Dec 23, 2025. — REUTERS

SYDNEY — A decades-old Pacific organization for environmental protection said the United States must go through a formal process to withdraw its support, after President Donald Trump listed it among 66 entities the US would leave because they “operate contrary to US national interests”.

On Thursday, Washington said it would withdraw from dozens of international and UN entities, including the world’s key climate treaty and the Secretariat of the Pacific Regional Environment Program (SPREP).

Headquartered in Samoa, SPREP has supported dozens of low-lying island states to raise awareness at UN climate conferences about the threat to their survival from rising sea levels caused by climate change.

The organization employs more than 150 staff across Fiji, Solomon Islands, Vanuatu, and the Republic of the Marshall Islands, and runs program to reduce pollution, improve warning systems for severe weather and plan for disaster response to oil spills.

Sefanaia Nawadra, SPREP’s director-general, said the US contributed funding and technical expertise, but other partners were expected to help it continue its work.

“There is a formal process that the US will need to follow to withdraw its membership of SPREP. They are a valued member of SPREP until that formal withdrawal process is completed,” he said in a statement to Reuters.

“The impact of that will be determined as part of the details of the withdrawal process,” he added.

According to SPREP’s annual report, its annual budget comes primarily from five donor countries, Australia, Britain, New Zealand, France, and the US

China has also contributed $200,000 annually for several years.

A Pacific Islands government minister, who declined to be named because of the sensitivity of the issue, said the US move to withdraw from the organization would negatively impact US influence in the region, where China is expanding ties.

Several Pacific Island nations face new hurdles to enter the United States.

Fiji, Vanuatu, Tuvalu, and Tonga were listed on Wednesday among countries whose nationals must pay a costly visa bond to enter the US from January 21.

Tonga was listed in December as facing entry restrictions from January 1.

US Deputy Secretary of State Christopher Landau discussed migration in a call on Wednesday with Tonga Prime Minister Lord Fakafanua, he wrote on social media platform X.

The United States Embassy in Suva referred requests for comment to the State Department, which did not immediately respond to a request for comment. — Reuters