Photos: Presidents and their children

Chelsea Clinton, out of braces, walks her beaming dad across the South Lawn of the White House.  (J. Scott Applewhite / Associated Press)

President Clinton, First Lady Hillary Clinton and Chelsea depart the White House on the way to Germany for the president to attend the economic summit.  (Chris Kleponis / AFP/Getty Images)

The Clintons and dog Buddy head toward a helicopter bound for Martha’s Vineyard for a family vacation.  (Roberto Borea / Associated Press)

President Bush, First Lady Laura Bush and their daughter Barbara attend the Olympics in China.  (Kay Nietfield / EPA)

Then-candidate Barack Obama walks daughter Sasha, 7, to a Halloween party in Chicago.  (Jae C. Hong / Associated Press)

Obama blows out his birthday candle during a 2004 fundraiser in Matteson, Ill. Wife Michelle, holding the cake, Sasha and Malia help him out.  (Tim Boyle / Getty Images)

U.S. Sen.-elect Obama, with Malia, Michelle and Sasha, waves to supporters at his 2004 victory celebration at the Hyatt Regency Hotel in Chicago.  (E. Jason Wambsgans / Chicago Tribune)

Malia, 10, and Sasha, 7, greet their dad as he steps off a plane in Pueblo, Colo., just days before the presidential election.  (Alex Brandon / Associated Press)

Candidate Obama sat down for some shaved ice in Kailua, Hawaii, with Sasha, second from left, and Malia, second from right, and friends.  (Alex Brandon / Associated Press)

Sasha and her father confer at the Chicago polling place where Obama cast his 2008 election vote.  (Jae C. Hong / Associated Press)

President-elect Obama, Sasha, Malia and Michelle walk on stage at the election night rally in Chicago.  (Jae C. Hong / Associated Press)