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Washington, UNITED STATES: Queen Elizabeth II is escorted by US President George W. Bush past a painting of former US president Harry S. Truman from the residence area to the Grand Foyer of the White House prior to State Dinner for the British monarch and Prince Philip 07 May 2007 in Washington, DC. The Queen last visited the United States in 1991 when Bush's father was president. AFP Photo/Saul Loeb (Photo credit should read SAUL LOEB/AFP via Getty Images)

Washington, UNITED STATES: Queen Elizabeth II is escorted by US President George W. Bush past a painting of former US president Harry S. Truman from the residence area to the Grand Foyer of the White House prior to State Dinner for the British monarch and Prince Philip 07 May 2007 in Washington, DC. The Queen last visited the United States in 1991 when Bush's father was president.    AFP Photo/Saul Loeb (Photo credit should read SAUL LOEB/AFP via Getty Images)