The agreement includes a plan to lease back the strategically important US-UK military base on Diego Garcia at British taxpayers’ expense.
But Mr Trump, speaking in the Oval Office alongside the Prime Minister, said: “We’re going to have some discussions about that very soon, and I have a feeling it’s going to work out very well.
Donald Trump has indicated he would be prepared to back Sir Keir Starmer’s deal to hand over sovereignty of the Chagos Islands to Mauritius.
Under the plan, the UK is expected to lease Diego Garcia for 99 years, with an option for a 40-year extension.
“They’re talking about a very long-term, powerful lease, a very strong lease, about 140 years actually.