United States President Barack Obama, accompanied by Marian Robinson, Michelle Obama's mother, left to right, First Lady Michelle Obama, and their daughters Malia and Sasha, watch during the National Christmas Tree lighting ceremony on the Ellipse near the White House in Washington, DC, on Thursday, December 9, 2010. The first Christmas tree lighting ceremony took place back in 1923, with U.S. President Calvin Coolidge presiding..Credit: Andrew Harrer / Pool via CNP
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