LONDON, ENGLAND - MARCH 03:  The Duke of Edinburgh (first left) First Lady of Mexico Angela Rivera (second left) President of Mexico Enrique Pena Nieto (third left) and Queen Elizabeth II (first right) view a display of Mexican items in the Royal Collection by at Buckingham Palace on March 3, 2015 in London, England. The President of Mexico, accompanied by Senora Angelica Rivera de Pena, are on a State Visit to the United Kingdom as the guests of Her Majesty The Queen from Tuesday 3rd March to Thursday 5th March.  (Photo by Jonathan Brady - WPA Pool /Getty Images)