Andrew Harnik/AP Photo
  • President Barack Obama, left, accompanied by his daughters Sasha and Malia, their friends, and the President's sister Maya Soetoro-Ng, her husband Konrad Ngwalk, through Central Park, July 18, 2015, in New York. Obama is spending a mainly personal weekend with his daughters in New York City.
    Andrew Harnik/AP Photo
  • Central Park visitors stop to catch a glimpse of President Barack Obama as he walks through Central Park with his daughters Sasha and Malia, July 18, 2015, in New York. Obama is spending a mainly personal weekend with his daughters in New York City.
    Andrew Harnik/AP Photo
  • President Barack Obama walks in Central Park with daughters Sasha, 4th left, Malia, 3rd right, and friends in New York City, July 18, 2015.
    Kevin Lamarque/Reuters
  • President Barack Obama puts his arm around daughter Sasha as they walk toward Marine One upon their arrival at JFK Airport in New York, July 17, 2015. With them are two of Sasha's friends.
    Kevin Lamarque/Reuters
  • President Barack Obama and daughter Sasha, right, along with two of Sasha's friends, board Air Force One as they depart Joint Base Andrews in Washington, July 17, 2015.
    Kevin Lamarque/Reuters
  • President Barack Obama and daughter Sasha Obama leave the White House to board Marine One in Washington, July 17, 2015.
    Olivier Douliery-Pool/Getty Images