Britain's Queen Elizabeth II (R) shakes hands with US President Donald Trump during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by Victoria Jones / POOL / AFP) (Photo credit should read VICTORIA JONES/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (L) walks with US President Donald Trump during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by Victoria Jones / POOL / AFP) (Photo credit should read VICTORIA JONES/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (L) speaks with US President Donald Trump (R) during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by TOBY MELVILLE / AFP) (Photo credit should read TOBY MELVILLE/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (C) speaks with US President Donald Trump (R) as US First Lady Melania Trump (L) smiles during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by TOBY MELVILLE / POOL / AFP) (Photo credit should read TOBY MELVILLE/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (C) stands with US President Donald Trump (R) and US First Lady Melania Trump (L) as they listen to the US national anthem during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by TOBY MELVILLE / POOL / AFP) (Photo credit should read TOBY MELVILLE/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (C) stands with US First Lady Melania Trump (L) and Britain's Camilla, Duchess of Cornwall (R) during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by TOBY MELVILLE / POOL / AFP) (Photo credit should read TOBY MELVILLE/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (L) views a display of US items of the Royal collection with US President Donald Trump and US First Lady Melania Trump at Buckingham palace at Buckingham Palace in central London on June 3, 2019, on the first day of their three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by MANDEL NGAN / AFP) (Photo credit should read MANDEL NGAN/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (2R) stands with US President Donald Trump (R) and US First Lady Melania Trump (C) during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by Victoria Jones / POOL / AFP) (Photo credit should read VICTORIA JONES/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
(L-R) US First Lady Melania Trump, Britain's Queen Elizabeth II, US President Donald Trump, Britain's Prince Charles, Prince of Wales and Britain's Camilla, Duchess of Cornwall watch guardsmen parade during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by Adrian DENNIS / AFP) (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (L) smiles as she speaks with US President Donald Trump (R) during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by Adrian DENNIS / AFP) (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (C) stands with US President Donald Trump (R) and US First Lady Melania Trump during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by Victoria Jones / POOL / AFP) (Photo credit should read VICTORIA JONES/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (4L) stands with US President Donald Trump (C), US First Lady Melania Trump (3L), Britain's Prince Charles, Prince of Wales (2R) and Britain's Camilla, Duchess of Cornwall as they listen to the US national anthem during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by Victoria Jones / POOL / AFP) (Photo credit should read VICTORIA JONES/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (C) smiles as she speaks with US President Donald Trump (R) as US First Lady Melania Trump (L) stands by during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by Adrian DENNIS / AFP) (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (L) talks with US President Donald Trump (R) during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by TOBY MELVILLE / POOL / AFP) (Photo credit should read TOBY MELVILLE/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (L) views a display of US items of the Royal collection with US President Donald Trump at Buckingham palace at Buckingham Palace in central London on June 3, 2019, on the first day of their three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by MANDEL NGAN / AFP) (Photo credit should read MANDEL NGAN/AFP/Getty Images)
U.S. President Trump's State Visit To UK - Day One
LONDON, ENGLAND - JUNE 03: Queen Elizabeth II (second left) officially welcomes US President Donald Trump (C) and First Lady Melania Trump (L) with Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall (R) during their visit on June 03, 2019 at Buckingham Palace in London, England. President Trump's three-day state visit will include lunch with the Queen, and a State Banquet at Buckingham Palace, as well as business meetings with the Prime Minister and the Duke of York, before travelling to Portsmouth to mark the 75th anniversary of the D-Day landings. (Photo by Chris Jackson/Getty Images)
U.S. President Trump's State Visit To UK - Day One
LONDON, ENGLAND - JUNE 03: Queen Elizabeth II smiles as she officially welcomes US President Donald Trump and First Lady Melania Trump (L) with Prince Charles, Prince of Wales (R) during their visit on June 03, 2019 at Buckingham Palace in London, England. President Trump's three-day state visit will include lunch with the Queen, and a State Banquet at Buckingham Palace, as well as business meetings with the Prime Minister and the Duke of York, before travelling to Portsmouth to mark the 75th anniversary of the D-Day landings. (Photo by Chris Jackson/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
US President Donald Trump (R) stands with Britain's Queen Elizabeth II (L) during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by Adrian DENNIS / POOL / AFP) (Photo credit should read ADRIAN DENNIS/AFP/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (C) stands with US First Lady Melania Trump (L) and Britain's Camilla, Duchess of Cornwall (R) during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by Victoria Jones / POOL / AFP) (Photo credit should read VICTORIA JONES/AFP/Getty Images)
U.S. President Trump's State Visit To UK - Day One
LONDON, ENGLAND - JUNE 03: Queen Elizabeth II (second left) officially welcomes US President Donald Trump (C) and First Lady Melania Trump (L) with Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall (R) during their visit on June 03, 2019 at Buckingham Palace in London, England. President Trump's three-day state visit will include lunch with the Queen, and a State Banquet at Buckingham Palace, as well as business meetings with the Prime Minister and the Duke of York, before travelling to Portsmouth to mark the 75th anniversary of the D-Day landings. (Photo by Chris Jackson/Getty Images)
BRITAIN-US-POLITICS-DIPLOMACY-ROYALS
Britain's Queen Elizabeth II (L) walks with US President Donald Trump (C) and US First Lady Melania Trump during a welcome ceremony at Buckingham Palace in central London on June 3, 2019, on the first day of the US president and First Lady's three-day State Visit to the UK. - Britain rolled out the red carpet for US President Donald Trump on June 3 as he arrived in Britain for a state visit already overshadowed by his outspoken remarks on Brexit. (Photo by Victoria Jones / POOL / AFP) (Photo credit should read VICTORIA JONES/AFP/Getty Images)
U.S. President Trump's State Visit To UK - Day One
LONDON, ENGLAND - JUNE 03: Queen Elizabeth II (second left) officially welcomes US President Donald Trump (C) and First Lady Melania Trump (L) with Prince Charles, Prince of Wales and Camilla, Duchess of Cornwall (R) during their visit on June 03, 2019 at Buckingham Palace in London, England. President Trump's three-day state visit will include lunch with the Queen, and a State Banquet at Buckingham Palace, as well as business meetings with the Prime Minister and the Duke of York, before travelling to Portsmouth to mark the 75th anniversary of the D-Day landings. (Photo by Chris Jackson/Getty Images)
U.S. President Trump's State Visit To UK - Day One
LONDON, ENGLAND - JUNE 03: (L-R) U.S. President Donald Trump and the Prince Charles, Prince of Wales during the Ceremonial Welcome at Buckingham Palace on the first day of the U.S. president and First Lady's three-day State visit on June 3, 2019 in London, England. President Trump's three-day state visit will include lunch with the Queen, and a State Banquet at Buckingham Palace, as well as business meetings with the Prime Minister and the Duke of York, before travelling to Portsmouth to mark the 75th anniversary of the D-Day landings. (Photo by Victoria Jones - WPA Pool/Getty Images)
U.S. President Trump's State Visit To UK - Day One
LONDON, ENGLAND - JUNE 03: Guests on the balcony at Buckingham Palace as Queen Elizabeth II officially welcomes US President Donald Trump and First Lady Melania Trump during their visit on June 03, 2019 in London, England. President Trump's three-day state visit will include lunch with the Queen, and a State Banquet at Buckingham Palace, as well as business meetings with the Prime Minister and the Duke of York, before travelling to Portsmouth to mark the 75th anniversary of the D-Day landings. (Photo by Chris Jackson/Getty Images)
U.S. President Trump's State Visit To UK - Day One
LONDON, ENGLAND - JUNE 03: (L-R) First Lady First Lady Melania Trump and U.S. President Donald Trump are greeted by the Prince Charles, Prince of Wales as they arrive for the Ceremonial Welcome at Buckingham Palace on the first day of the U.S. president and First Lady's three-day State visit on June 3, 2019 in London, England. President Trump's three-day state visit will include lunch with the Queen, and a State Banquet at Buckingham Palace, as well as business meetings with the Prime Minister and the Duke of York, before travelling to Portsmouth to mark the 75th anniversary of the D-Day landings. (Photo by Victoria Jones - WPA Pool/Getty Images)
U.S. President Trump's State Visit To UK - Day One
LONDON, ENGLAND - JUNE 03: (L-R) First Lady Melania Trump, Queen Elizabeth II and Camilla, Duchess of Cornwall during the Ceremonial Welcome at Buckingham Palace on the first day of the U.S. president and First Lady's three-day State visit on June 3, 2019 in London, England. President Trump's three-day state visit will include lunch with the Queen, and a State Banquet at Buckingham Palace, as well as business meetings with the Prime Minister and the Duke of York, before travelling to Portsmouth to mark the 75th anniversary of the D-Day landings. (Photo by Victoria Jones - WPA Pool/Getty Images)