Trump also said that former Foreign Secretary Johnson - who disagrees with May on Brexit and resigned this week - would make a "great prime minister", adding: "I think he's got what it takes". "She wanted to go a different route", he told the Sun. "I think they like me in the UK. Bring a friend, if you have one", the socialist playwright penned in a note to the conservative prime minister.
"Unfortunately, there was a story that was done which was generally fine but it didn't put in what I said about the Prime Minister and I said a tremendous thing", he said. 'And so now that the details of the white paper are clear, the president and the prime minister will be able to discuss this in more detail'.
He said he had gotten to know her a lot better in the last few days and reckoned she was a "tough negotiator and a very smart and determined person" who would do very well.
He repeated the falsehood during a press conference with UK Prime Minister Theresa May.
"That's up to the people", Mr. Trump said, who went on to generously praise Mr. Johnson, Mrs. "She probably thought it was too brutal".
But Macron disputed Trump's claims, saying that the joint statement the leaders had signed went no further than what had previously been agreed, apart from setting out how some countries plan to get there.
Speaking to TIME about Trump's comments at the launch of the blimp on Friday morning, one of the activists responsible said: "Great". All I can say is, did you?
May has insisted that her Brexit plan will allow Britain to strike its own lucrative trade deals with countries like the U.S. after her country has left the bloc as planned in March next year.
"For years presidents have been coming to these meetings and have talked about the tremendous expense to the USA, and tremendous progress has been made", Mr Trump said.
He also vowed to raise allegations of Russian meddling in the 2016 U.S. presidential election, amid an ongoing USA investigation into whether his campaign colluded with Moscow.
The president said he would raise the issue of Russian meddling in the USA election.
During the meetings, he demanded via tweet that North Atlantic Treaty Organisation countries "Must pay 2% of GDP IMMEDIATELY, not by 2025" and then rattled them further by privately suggesting member nations should spend four per cent of their gross domestic product on defence - a bigger share than even the United States now pays, according to North Atlantic Treaty Organisation statistics.
Al Jazeera's Neave Barker, reporting from London, said Trump is seen as a "divisive figure" by the protesters.
Mr. Trump has been a keen supporter of Brexit and on Thursday he appeared to echo those concerns.
Trump blamed London mayor Sadiq Khan for allowing the protests and blasted the city's first Muslim leader as weak on terror and crime.
Trump has always been a Brexit supporter and has expressed enthusiasm for a wide-ranging trade deal with Britain after Brexit, something heralded by eurosceptics as being one of the great benefits of exiting the bloc. In June, after Trump called for Russian Federation to be readmitted to the G7 (after being booted over Crimea), Obama national security adviser Susan Rice called Trump's comments "very destructive".
"He's really quite stung by the criticism he's been getting", Dunn said.
"When we leave the European Union we will begin to chart a new course for Britain in the world and our global alliances will be stronger than ever", May said ahead of Trump's visit.