First Lady Michelle Obama walks with children past the official White House Christmas Tree in the Blue Room, Nov. 30, 2011. Mrs. Obama welcomed military families to the White House for for the first viewing of the 2011 holiday decorations.

First Lady Michelle Obama walks with children past the official White House Christmas Tree in the Blue Room, Nov. 30, 2011. Mrs. Obama welcomed military families to the White House for for the first viewing of the 2011 holiday decorations.

First Lady Michelle Obama walks with children past the official White House Christmas Tree in the Blue Room, Nov. 30, 2011. Mrs. Obama welcomed military families to the White House for for the first viewing of the 2011 holiday decorations.