He added: "I would have done it much differently".
In an interview with the Sun published late Thursday, as he dined with May, Trump said her proposal to execute a so-called "soft Brexit", maintaining ties with the European Union, was wrong and would torpedo a us trade deal.
"Just make sure we can trade together, that's all that matters", he said.
The withering put-down came after the President rocked his first official visit to the United Kingdom by trashing the PM's Brexit plans and telling her a transatlantic trade deal is off.
Trump's comments come after an explosive interview the president conducted with The Sun newspaper, in which he publicly criticised the prime minister's Brexit strategy and suggested it would kill any chance of a US-UK trade deal.
Trump also used the interview to launch an attack on Theresa May's plans for Brexit which were unveiled in full yesterday and indicate a willingness on the UK's part to keep customs borders open with the EU.
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In the interview, Trump was especially critical of May's handing of the UK's upcoming exit from the European Union. "I haven't been there in a long time", Trump said.
Ms Thornberry added: 'I don't trust her to stand up for our country when it comes to President Trump.
That's right, folks, the only relationship advice that matters right now is that you have to find someone who looks at you the way Theresa May looks at Trump.
Khan told BBC Radio Friday, "The idea that you can blame (a rise in crime) on immigration from Africa is I think preposterous and we should call him out when he does so". Trump said: "The relationship between our two nations is indispensable to the cause of liberty, justice, and peace". He paid a brief visit to the US ambassador's central London residence before taking a helicopter to Blenheim Palace ― the monumental house where Winston Churchill was born― for a lavish dinner event with British Prime Minister Theresa May. Hundreds of protesters descended on the castle to voice their opposition to the president's visit.
Trump, whose hardline immigration policies have included the recent "zero tolerance" policy that led to the separation of immigrant families, bemoaned migration flows into Europe, calling the changing population there "a shame".
GMB/status/1017669404115587077?"Of course we stand shoulder to shoulder in adversity, and it was really comforting when Americans sent messages of support when we had terrorist attack past year", Khan said, "but when we think you're wrong we should say you're wrong - that's what a special relationship is all about".
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It has only been a few months, but it seems like this saga has been brewing for a billion years. All in all, it's not a bad deal and not a robbery by any means.
"I don't know what you're going to do, but whatever you do is OK with us". I get along with her very nicely. He then reminded the press that his mother was from Scotland.
"We record when we deal with reporters, it's called fake news and we solve a lot of problems with the good old recording instrument".
Updates with additional Trump remarks beginning in fourth paragraph.
Mr Trump's comments emerged as Mrs May pulled out all the stops to entertain the president and wife Melania with an evening of pomp and ceremony at Blenheim Palace.
"I'm going to a pretty hot spot right now, right?"
The Sun is no stranger to publishing controversial material.
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