President Barack Obama, First Lady Michelle Obama, and their daughters, Malia and Sasha, sit for a family portrait in the Green Room of the White House, Sept. 1, 2009. (Official White House Photo)Photo by Annie Leibovitz/Released by White House Photo OfficeThis official White House photograph is being made available only for publication by news organizations and/or for personal use printing by the subject(s) of the photograph. The photograph may not be manipulated in any way and may not be used in commercial or political materials, advertisements, emails, products, promotions that in any way suggests approval or endorsement of the President, the First Family, or the White House.