His highly controversial remarks came at the end of a day in which he had already waded deeply into the Brexit row over May's Brexit vision. It would see Britain follow European Union rules on goods to protect cross-border trade and avoid checks on the Irish frontier, while enabling it to control migration and sign new non-EU trade deals, including in services.
Mr Trump has sparked a backlash from UK politicians after telling The Sun the PM's Brexit plan would "probably kill" a UK-US trade deal.
Trump claimed that he didn't criticize May in his interview with The Sun, and he even called the report "fake news".
May hoped to use the talks to explain her plan for Brexit and to outline the complexities involved.
He also told the tabloid that he had shared advice with May during Britain's negotiations with the European Union, but said May ignored his advice. I really look forward to meeting her.
"I predicted Brexit. I was cutting a ribbon for the opening of Turnberry - you know they totally did a whole renovation, it is handsome - the day before the Brexit vote", Trump said.
"I think he's got what it takes".
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Of Johnson, he said: "I have a lot of respect for Boris. He's been saying very good things about me as president".
He also said he "used to love London" but now chooses not to visit the city. I haven't been there in a long time.
"I guess when they put out blimps to make me feel unwelcome, no reason for me to go to London".
Humiliating", added Labour MP for Exeter Ben Bradshaw.ADVERTISEMENTAnother Labour MP, Rupa Huq, told The Guardian that Trump's comments about Khanm, London's first Muslim mayor, constituted Islamophobia."A dash of Islamophobia lobbed at Sadiq Khan who he blames for terrorism. "Right now we're going to be talking about some things taking place in the Middle East and elsewhere".
"You have a mayor who has done a awful job in London", Trump said, adding later that Khan had "done a very bad job on terrorism".
"I think he has not been hospitable to a government that is very important". Scottish police, however, said that the balloon could not fly over the Turnberry golf club Trump owns on the west coast of the country.
Ms May also thanked the US President for his support over Russia, which Britain has blamed for a nerve agent attack on a former Russian spy in south-west England in March. "I think he (Khan) has done a very bad job on terrorism", Trump told The Sun newspaper.
He continued: 'I think you have to give all the protagonists, whether it's the president or the prime minister, a little bit of leeway here.
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