Afterward, the Trumps met Prince Charles and the Duchess of Cornwall for tea at a royal house across from Buckingham Palace. State visits differ from official visits and are normally at the invitation of the Queen, who acts on advice from the government.
Queen: 'Was it okay?
After Trump inspected the honor guard, the Trumps and Windsors stood at the entrance as a band played God Save the Queen before they went inside for a private lunch, which was set to be attended by Prince Harry.
Before making their way down, Charles said to his wife: 'Are we going down?.
After lunch with the queen, Trump was shown the collection at Buckingham Palace, where he inspected, among other items, an 18th-century map of NY, historic photos golf at St. Andrews and books about birds and George Washington.
Speaking directly to the US President as he arrived in Britain, Mr Khan claimed the US was "rolling back much of the progress made in previous decades".
While Camilla said: 'Nice to meet you, ' as they exchanged pleasantries.
"When you are the President of the US you have a massive leadership role, you have a massive platform as well".
While the camera angle meant the President's mouth could not be seen, the Queen appeared relaxed and in good spirits.
A maize-based protest previous year Where does the protest go?
She appeared not to care and politely smiled at the towering billionaire.
Asked if he thinks the president is misunderstood in the UK, Mr Curri told the BBC: "People want honesty and strong leadership". 'Thank you, ' she smiled, as she greeted the President, pictured, before adding: 'Was it okay?
But Mr Trump's visit also comes at a fraught time in British politics, with Mrs May stepping down as leader of the Conservative Party on June 7 over the country's Brexit turmoil.
Also present at the palace are extended members of the Trump family, including the President's daughter and son-in-law, Ivanka & Jared Kushner.
Others from the business and cultural worlds are expected to be guests, too, including prominent Americans living in London. The group then took a tour of the Royal Collection. The three-mile journey ended as Marine One landed on the garden of the palace.
For the occasion, Melania wore a tailored white collared pencil dress paired with a dark navy belt and a white hat.
With the first deafening blast of the ceremonial guns, those waiting outside Buckingham Palace rushed over, phones outstretched ahead of them, attempting to capture the scenes. The formal tea hosted by Prince Charles brings together a future king who has warned repeatedly about the perils of climate change and a president who is actively dismantling USA policies created to slow global warming.
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