US President George Bush (2nd R) and First Lady Barbara Bush (R) arrive on May 16, 1991 at a reciprocal dinner at the British Embassy accompanied by Britain's Queen Elizabeth II (2nd L) and her husband, Prince Philip (L). Earlier the Queen addressed a joint session of the US Congress, the first British Monarch to do so.    AFP PHOTO LUKE FRAZZA (Photo by LUKE FRAZZA / AFP)        (Photo credit should read LUKE FRAZZA/AFP/Getty Images)