Since Elizabeth II came to the throne in 1952, 10 U.S. presidents have been elected. The UK's queen has met all of them, with the exception of Lyndon B. Johnson. She would have met President Johnson during the funeral of President John F. Kennedy but was pregnant with her third son, Edward, at the time and could not make the trip.
Truman is the only U.S. president the queen met while a princess.
He was the first serving president she met during her.
Amid much fanfare and huge media interest, President John F. Kennedy was a dinner guest along with his wife, Jackie, at Buckingham Palace in June 1961.
Richard Nixon met Queen Elizabeth in Buckingham Palace during an informal visit to Great Britain shortly after becoming the 37th U.S. president in 1969.
Queen Elizabeth met Gerald Ford in 1976 during the U.S. Bicentennial.
During a 1977 dinner of foreign heads of state at Buckingham Palace, Jimmy Carter described the home of the British monarch as: "one of the most beautiful places I've ever seen.
The Reagans were the first U.S. first family to be overnight guests of the sovereign at Windsor in 1982.
President Bush Sr. visited the queen at Buckingham Palace in 1989 and in May 1991.
Bill Clinton met the queen more than once during his tenure, taking tea with her at Buckingham Palace in 2000 and also at a service to mark 50th anniversary of the D Day landings in Normandy in 1994.
George W. Bush visited Britain on an official state visit in 2003. 2003年，小布什对英国进行正式国事访问。
Queen Elizabeth has reigned over England longer than President Obama has been alive.