WASHINGTON - APRIL 17:  A priest holds a Holy Communion wafer as Pope Benedict XVI celebrates Mass at Nationals Park April 17, 2008 in Washington, DC. Today is Pope Benedict XVI's third day of his visit to the United States. Getty Images logo Getty Images 46 months ago

WASHINGTON - APRIL 17: A priest holds a Holy Communion wafer as Pope Benedict XVI celebrates Mass at Nationals Park April 17, 2008 in Washington, DC. Today is Pope Benedict XVI's third day of his visit to the United States.