WASHINGTON, DC - DECEMBER 06: U.S. President Barack Obama (4th R), first lady Michelle (R), daughters Sasha (3rd R) and Malia (5th R), and mother-in-law Marion Robinson (2nd R) participate in the lighting ceremony of the National Christmas Tree during a ceremony at the Ellipse December 6, 2013 in Washington, DC. The first family was joined by entertainers at the annual event to celebrate the holiday season. (Photo by Alex Wong/Getty Images)

WASHINGTON, DC - DECEMBER 06:  U.S. President Barack Obama (4th R), first lady Michelle (R), daughters Sasha (3rd R) and Malia (5th R), and mother-in-law Marion Robinson (2nd R) participate in the lighting ceremony of the National Christmas Tree during a ceremony at the Ellipse December 6, 2013 in Washington, DC. The first family was joined by entertainers at the annual event to celebrate the holiday season.  (Photo by Alex Wong/Getty Images)