In a recent meeting with a cross-party group of British MPs in Washington, I was struck by the outright defeatism on display over the Chagos Islands surrender. I was told that Sir Keir Starmer’s shameful agreement in May to hand over the British Indian Ocean Territory to Chinese ally Mauritius was a done deal, and it was pointless to even discuss it. Several of the MPs agreed that the Labour Government’s decision was absolutely awful, but the overriding feeling was that nothing could be done to stop it.

Thankfully, there is hope that the deal can still be torpedoed at the twelfth hour. As the Chagos agreement is a treaty that cedes sovereign British territory, legal experts note that it must be ratified first by Westminster. And it would surely be extremely difficult for the Prime Minister to defend the agreement in Parliament if Britain’s closest friend and partner stepped in to oppose it.

The U.S. President’s upcoming state visit to London on September 17-19 has added a new sense of urgency, with growing concerns in the United States over the implications of the deal for the future of the vital Anglo-American military base at Diego Garcia, which is capable of hosting America’s long-range B-2 bombers. Diego Garcia sits at the heart of the Indian Ocean, and will play an increasingly important role for the United States in combatting Communist China in the Indo-Pacific region, a huge strategic priority for the Trump administration.

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A growing number of U.S. policymakers fear that the Chagos deal will hand Beijing an unprecedented win at the expense of the United States and the United Kingdom, undermining the long-term future of Diego Garcia and significantly weakening the strategic position of the West in the region. Indeed, the Chagos issue is far from over in Washington, and major red flags are being raised in the U.S., despite a large-scale PR offensive waged by the Foreign Office earlier this year.

The stakes are incredibly high. There is a very real possibility that Mauritius could, a few years from now, break the agreement with the UK over Diego Garcia under pressure from Beijing, find a reason to end the lease with London, and cut an even more lucrative deal with Communist China. What if the Chinese offered Mauritius double or triple what the British Government is offering to pay? This would be a nightmare scenario for the U.S., resulting in the loss of an incredibly vital American base.

Senator John Kennedy of Louisiana has been a prominent opponent of the UK giving the Chagos Islands away, and other Members of Congress are now weighing in. In a highly significant development this month on Capitol Hill, the powerful Republican-led House of Representatives Committee on Appropriations directly raised the issue of the Chagos Islands deal between the UK and Mauritius, urging the U.S. Secretary of State to engage further with the British Government on assurances that vital U.S. strategic interests are protected.

In the “National Security, Department of State, and Related Programs Appropriations Bill, 2026”, the Committee recognized “that with the growing challenge from the PRC the military facilities on the island of Diego Garcia are central to Anglo-American power projection and relative control of the Indian Ocean. Recognizing the invaluable strategic importance and geographic relevance of Diego Garcia to the United States, the Committee encourages the Secretary of State to engage with His Majesty’s Government of the United Kingdom to ensure our long-term access to the facilities and that they remain integral to allied security.”

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Meanwhile in the UK, the full cost of the Chagos deal to the British taxpayer is only now seeing the light of day. As The Telegraph recently revealed, the total cost to the British taxpayer to lease the Diego Garcia military base from Mauritius will be almost £35bn if fulfilled, 10 times more than the Labour government originally claimed. This is one of the biggest deceptions by a British government in modern times, and also one of the most dangerous, with massive implications for U.S. and British national security interests on the world stage.

In the weeks ahead, we can expect significantly increased scrutiny of the Starmer Government’s Chagos Islands deal on Capitol Hill as well as from the administration, especially in advance of the upcoming presidential state visit to the UK next month.

Significantly, the U.S. State Department backed the Chagos deal in a statement in May, but there has never been an official declaration issued by the White House. A last-minute intervention against the deal is not out of the question.

President Trump still has an opportunity to weigh in directly on the issue, and can and should send the Chagos deal to the depths of the Indian Ocean where it clearly belongs. By doing so, he would be defending vital American strategic interests, denying China a major long-term victory, and protecting a crucial military base at the heart of the U.S./UK Special Relationship