Mr Duncan suggested the President had not seen the details of the plan when he gave the interview on Wednesday, while also stressing that the much-vaunted special relationship was about much more than Brexit.
"Fortunately, we tend to record stories now so we have it for your enjoyment if you'd like it", he said.
Trump told The Sun that if May pursues her "soft" Brexit plan, it will jeopardize any potential trade deal between the United States and Britain.
Trump said the interview published by the Sun omitted his praise of May, and that his staff had taped the interview: "It's called fake news and we solve a lot of problems with the good old recording instrument". "I actually told Theresa May how to do it, but she didn't agree, she didn't listen to me", he told The Sun.
"The UK can't afford to alienate either the United States or the European Union, its two largest foreign trade partners, and will not be able to choose an "either-or" solution", commented Fiona Cincotta, senior market analyst at City Index in London.
"Whatever you do is OK with me", Trump said. The dinner offered much pomp and circumstance with a military band, red carpet and ornate surroundings, even though Trump's stop in the United Kingdom is officially not a state visit.
However, while Trump and May exchanged warm words, tens of thousands of protesters marched against the USA president through central London, bringing much of the British capital to a standstill. He said her former foreign secretary, Boris Johnson, would make an "excellent" prime minister, speaking just days after Johnson resigned his position in protest over May's Brexit plans.
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"They didn't put it in the headline", referring to the positive comments he claimed to have said about May during the interview.
In a frenetic news conference at Chequers, May's official country house, an unrestrained Trump blamed his predecessor for Russian aggression in Crimea, placed fair trade at the center of Britain's efforts to leave the European Union, defended his beliefs that immigration has damaged Europe and repeatedly jousted with television correspondents' whose coverage he found critical.
That's what it takes to get an apology from Trump, apparently.
'His policies are just dividing the world, ' she said.
"To say the president called us "fake news" with any serious intent is, well. fake news".
"People coming here nowadays feel very hopeless about what is happening".
Critics slammed Trump for a string of diplomatic blunders and said he wasn't fit to sit there.
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The unsubstantiated accusations drew forceful objections from Democrats , including from Rhode Island Rep. Democrats objected and Goodlatte eventually let the hearing proceed.
Trump is making his first trip to Britain as president after a tense summit with North Atlantic Treaty Organisation leaders in Brussels and on the heels of ruptures in British Prime Minister Theresa May's government because of the crisis over Britain's exit from the European Union.
After leaving Chequers, Trump travelled to Windsor Castle to have tea with Queen Elizabeth.
And as May struggles to hold her own government together, with the never-ending arguments about Brexit negotiations threatening to tear her Conservative party apart.
LANGFITT: I think - May didn't go into great detail here.
Queen Elizabeth II has met every United States president since 1952, with the exception of Lyndon B. Johnson. Anti-Trump protesters lined the road up to the building, but it is unlikely the Trumps - who arrived via helicopter - saw them. He said he would also talk about Ukraine, Syria and nuclear proliferation, calling it the biggest issue. That's your decision. Whatever you're going to do is OK with us.
'He won't take notice of this protest but I think the numbers here today show the English tradition of liberty'.
"Depicting Trump as a baby is a great way of targeting his fragile ego, and mocking him is our main motivation", said Matthew Bonner, one of the organisers of the balloon flight.
Blockbuster Video down to one United States store
This week, there are three stores remaining, but by next week there will only be one store open for business - in Bend, Oregon. According to The Oregonian , the stores' manager Kevin Daymude will not offer any rentals beyond Sunday night.