Sir Keir Starmer must open the North Sea and stop illegal immigration to get his premiership back on track, Donald Trump has told GB News.
The US President initially built up a close working relationship with the Prime Minister.
Mr Trump regularly expressed his personal liking for Sir Keir, even going as far as to describe the Labour leader as his "friend".
However, the pair appeared to fall out over foreign policy, including over Greenland and the Iran war.
When asked by GB News why Sir Keir had lost the support of the country, Mr Trump said: "His two biggest problems are energy and immigration.
"Those are his two big problems. He's should open up the North Sea immediately and get your energy running the right way and he's got to stop the illegal migration."
The Prime Minister consistently resists calls to expand exploration licences in the North Sea, instead insisting renewables will deliver lower energy prices.
Labour MPs defeated a Tory push to enable new drilling in the North Sea in March, with Mrs Badenoch losing the opposition motion by 297 votes to 108.
Sir Keir Starmer and Donald Trump's relationship has becoming increasingly fraught
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Meanwhile, Sir Keir Starmer's small boats record is officially worse than any of his predecessors.
More than 70,000 have crossed the Channel since the Prime Minister came to power in July 2024.
Labour's "one-in, one-out" deal has also come under scrutiny after the Home Office rejected a GB News information request on its costings.
However, the Home Office continues to insist that more than 60,000 illegal migrants have been removed since Sir Keir secured the keys to No10.
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Under Labour, new licences for North Sea exploration have been banned | GETTYDismissing similar criticisms raised by Mr Trump last month, Sir Keir said: "I'm here to serve the British people always, to have their interests and to make sure that I make the right decisions for them."
"That is why I took the decision that we would not be dragged into the war in Iran.
"That is why I took the decision we wouldn't be dragged into the blockade of the Strait [of Hormuz].
"That is in our best national interest. That is my duty. I will stick to it, and I'm not going to be diverted or deflected from that by what anybody else says."
Official figures have shown how the number of people crossing by small boat has rapidly increased over the years | PASir Keir's position as Prime Minister is becoming increasingly precarious following the 2026 Local Elections.
Labour lost almost 1,500 councillors across England, suffered a catastrophic defeat in Wales and ended up level with Reform UK in Scotland.
Almost 100 Labour MPs have now called on Sir Keir to resign as Prime Minister, with Greater Manchester Mayor Andy Burnham and Health Secretary Wes Streeting plotting to mount bids to replace him in No10.
Mr Trump has not publicly discussed Sir Keir's disastrous set of results following last Thursday until being approached by GB News.
Donald Trump has publicly hammered Sir Keir Starmer | PAHowever, the US President did congratulate John Swinney's return as First Minister following the Scottish National Party's victory north of the border.
He said: “Congratulations to John Swinney on winning his Re-Election for First Minister of Scotland.
“He is a good man, who worked very hard, along with the King and Queen of the United Kingdom, with respect to Tariff relief for Great Scottish Whiskey — and deserves this Big Electoral Victory! President DONALD J TRUMP.”
Mr Trump, who once described Nigel Farage as his "friend", did not extend a congratulatory message to Reform UK.