What does Queen Elizabeth II actually have the power to do?

Photos: US presidents meeting Queen Elizabeth II

Following the NATO summit meeting in Brussels, President Donald Trump is expected to meet with Queen Elizabeth II at Windsor Castle, joining several former sitting presidents who have visited the longest reigning monarch since her coronation in 1952.

» RELATED: Will Trump bow to the Queen? Here is how royal protocol works

Of the 11 U.S. presidents who held office since 1952, former President Lyndon B. Johnson was the only one to never cross paths with the Queen.

The Queen will welcome Trump and first lady Melania Trump at Windsor Castle Friday, where they will watch a military march before having tea, Buckingham Palace announced.

» RELATED: Trump will get red carpet treatment in UK and big protests

According to the New York Times, thousands of people are expected to protest Trump’s visit.

During a NATO press conference Thursday, Trump was asked about the mass demonstrations. “I think they like me a lot in the U.K. I think they agree with me on immigration. I’m very strong on immigration,” he said.

» RELATED: Queen complains about unauthorized use of song during Trump campaign

Photos of U.S. presidents meeting the Queen

President Harry Truman (Oct. 31, 1951)

Princess Elizabeth and Prince Philip, the Duke of Edinburgh, smiling as President Harry Truman gives a speech and his aide, General Harry Vaughan (extreme left) looks on, in Washington DC, November 5th 1951.
Photo: News | WFXT

Dwight D. Eisenhower (Oct. 17, 1957)

The Queen Elizabeth II is welcomed by President Eisenhower, 18 October 1957 in Washington. (Photo credit should read /AFP/GettyImages)
Photo: News | WFXT

John F. Kennedy (June 15, 1961)

President John F. Kennedy and First Lady Jackie Kennedy pay a visit to the royal family in England. (L-R): John F. Kennedy; Queen Elizabeth II; Jackie Kennedy, and Prince Philip.
Photo: Bettmann

Richard Nixon (Feb. 15, 1969)

Queen Elizabeth II with U.S President Richard Nixon (1913 - 1994) followed by Princes Philip and Charles, 1969. (Photo by Hulton Archive/Getty Images)
Photo: News | WFXT

Gerald Ford (July 17, 1976)

Gerald Ford (1913-2006) 38th President of the United States 1974-1977, dancing with Queen Elizabeth II at the ball at the White House, Washington, during the 1976 Bicentennial Celebrations of the Declaration of Independence.
Photo: News | WFXT

Jimmy Carter (May 7, 1977)

Queen Elizabeth II and Prince Philip (centre) with US President Jimmy Carter in the Blue Drawing Room at Buckingham Palace, London, 10th May 1977. Carter and other NATO heads of state are attending a dinner at the palace during the 1977 London summit
Photo: News | WFXT

Ronald Reagan (June 7, 1982)

(Original Caption) The Duke of Edinburgh, The First Lady Nancy Reagan, President Ronald Reagan, and Her Majesty Queen Elizabeth II pose for photographers here in Windsor Castle prior to their formal state dinner.
Photo: Bettmann

George H. W. Bush (June 1, 1989)

Leaders of Canada, France, Germany, Italy, Japan, the United Kingdom and United States pose for a photograph at the 17th G7 summit in London on July 15, 1991.

Bill Clinton (June 4, 1994)

Bill Clinton with the Queen and Prince Philip in Portsmouth, England, June 4, 1994 (Greg Gibson/AP Images)

George W. Bush (Nov. 21, 2003)

LONDON - NOVEMBER 19: HRH Queen Elizabeth II (2nd from L), U.S. President George W. Bush (L), First Lady Laura Bush and HRH the Duke of Edinburgh pose in the music room at Buckingham Palace on November 19, 2003 in London. The Queen was hosting a State Banquet at the Palace for the President and his wife, on the first official day of his 3-day visit to Britain. (Photo Royal Rota/Getty Images)
Photo: Getty Images/Getty Images

Barack Obama (May 24, 2011)

LONDON, ENGLAND - MAY 24: U.S. President Barack Obama and Queen Elizabeth II during a State Banquet in Buckingham Palace on May 24, 2011 in London, England. The 44th President of the United States, Barack Obama, and his wife Michelle are in the UK for a two day State Visit at the invitation of HM Queen Elizabeth II. During the trip they will attend a state banquet at Buckingham Palace and the President will address both houses of parliament at Westminster Hall. (Photo by Lewis Whyld - WPA Pool/Getty Images)
Photo: WPA Pool/Getty Images

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