White House

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President Obama gestures Tuesday during a news conference on the White House complex in Washington. (Associated Press)

President Barack Obama shakes hands with former President George H.W. Bush after presenting him the 2010 Medal of Freedom during a ceremony in the East Room of the White House in Washington, Tuesday, Feb. 15, 2011. (AP Photo/Pablo Martinez Monsivais)

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President Barack Obama speaks in the East Room of the White House in Washington Tuesday, Feb. 15, 2011, during the Medal of Freedom recipients ceremony. (AP Photo/Charles Dharapak)

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President Barack Obama presents former President George H.W. Bush the 2010 Medal of Freedom during a ceremony in the East Room of the White House in Washington, Tuesday, Feb. 15, 2011. (AP Photo/Pablo Martinez Monsivais)

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President Barack Obama awards the 2010 Medal of Freedom to artist Jasper Johns during a ceremony in the East Room of the White House in Washington Tuesday, Feb. 15, 2011. (AP Photo/Charles Dharapak)

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President Barack Obama reaches up to present a 2010 Presidential Medal of Freedom to basketball hall of fame member, former Boston Celtics coach and captain Bill Russell, Tuesday, Feb. 15, 2011, during a ceremony in the East Room of the White House in Washington. (AP Photo/Pablo Martinez Monsivais)

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President Barack Obama stands with Libby Little, whose husband Dr. Tom Little, an optometrist killed in Afghanistan, is posthumously awarded the 2010 Medal of Freedom during a ceremony in the East Room of the White House in Washington, Tuesday, Feb. 15, 2011. (AP Photo/Charles Dharapak)

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President Barack Obama awards the 2010 Medal of Freedom to Warren Buffett during a ceremony in the East Room of the White House in Washington Tuesday, Feb. 15, 2011. (AP Photo/Charles Dharapak)

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President Barack Obama kisses author and poet Maya Angelou after awarding her the 2010 Medal of Freedom during a ceremony in the East Room of the White House in Washington Tuesday, Feb. 15, 2011. (AP Photo/Charles Dharapak)

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President Barack Obama awards cellist Yo-Yo Ma the 2010 Medal of Freedom during a ceremony in the East Room of the White House in Washington, Tuesday, Feb. 15, 2011. (AP Photo/Charles Dharapak)

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President Barack Obama awards baseball hall of fame member, former St. Louis Cardinals great Stan "The Man" Musial the 2010 Medal of Freedom during a ceremony in the East Room of the White House in Washington, Tuesday, Feb. 15, 2011. (AP Photo/Charles Dharapak)

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President Barack Obama awards civil rights activist Sylvia Mendez the 2010 Medal of Freedom during a ceremony in the East Room of the White House in Washington, Tuesday, Feb. 15, 2011. (AP Photo/Charles Dharapak)

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President Barack Obama presents AFL-CIO President Emeritus John Sweeney the 2010 Medal of Freedom during a ceremony in the East Room of the White House in Washington, Tuesday, Feb. 15, 2011. (AP Photo/Charles Dharapak)

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** FILE ** President Barack Obama presents Rep. John Lewis, D-Ga., the 2010 Medal of Freedom during a ceremony in the East Room of the White House in Washington, Tuesday, Feb. 15, 2011. (AP Photo/Charles Dharapak)

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President Barack Obama awards Holocaust survivor and author Gerda Weissmann Klein a 2010 Medal of Freedom during a ceremony in the East Room of the White House in Washington, Tuesday, Feb. 15, 2011. (AP Photo/Charles Dharapak)

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President Barack Obama presents a 2010 Presidential Medal of Freedom to John H. Adams, co-founder of the Natural Resources Defense Council, Tuesday, Feb. 15, 2011, during a ceremony in the East Room of the White House in Washington. (AP Photo/Carolyn Kaster)