Ignoring all diplomatic niceties, the convention-shredding USA president set up the four-day visit with a rebuke of his beleaguered host as she battles to stop her government falling apart over Brexit.
"I think it's great".
"We've had a lot of questions about respect", she told Sky News.
Mr Trump's predecessor had "interfered" in a United Kingdom election, said Mr Rees-Mogg.
US President Donald Trump has lobbed a verbal hand grenade at Theresa May saying the British PM has wrecked the UK's exit from the European Union and killed any chances of a free trade deal with the US. "Now, for the benefit of all our people, let us work together to build a more prosperous future", she said.
Concerning Brexit, Trump said, "I would have done it much differently". "They like me a lot in the United Kingdom". Instead, what had been an state visit was downgraded to a working visit, which means the Queen does not officially host the president and the first lady as she has done with previous USA presidents.
Some 77 percent of Britons have an unfavorable view of Trump, according to a poll by YouGov with 1,648 respondents.
It noted that numerous demonstrations are being planned for July 12 to 14, surrounding the visit of the President.
The poll conducted this week said 63% found Trump racist, and 74% said he was sexist.
The biggest protest will take place in central London on Friday when thousands are expected to take to the streets to join the "Stop Trump" march.
LONDON - Opponents of Donald Trump flew a six-meter blimp depicting the US president as an orange, snarling nappy-wearing baby just outside the British parliament on Friday.
But Brexit champion Nigel Farage predicted there would be a "real clash" on Brexit. "I like Boris Johnson, I've always liked him", said Mr Trump.
During the press conference at No 10, the fictional president expresses his delight at the visit.
Mr Trump had joked earlier this week that his meeting with Vladimir Putin in the Finnish capital Helsinki on Monday "may be the easiest" part of his European trip.
"Donald Trump is in many ways a controversialist", he told the BBC.
Russian Federation has strongly denied the charge. She praised the friendship between the two allies, glossing over Trump's previous remarks that Britain was a "hot spot" in turmoil over Brexit.
He is due to stay overnight at the ambassador's Winfield House residence in London's Regent's Park, where demonstrators plan to play recordings of migrant children held in U.S. detention centers.
Trump is set to join May later on Friday at a display of joint US-UK military might at an undisclosed location before both leaders head to Chequers, the British prime minister's country retreat in Buckinghamshire, for in-depth bilateral discussions.
He then travels north to Scotland where he and his wife Melania will spend the weekend privately.