President Barack Obama

President Barack Obama talks on the phone with President Lee Myung-bak of South Korea in the Treaty Room Office in the White House Residence, November 23, 2010. Earlier in the day, North Korea conducted an artillery attack against the South Korean island of Yeonpyeong.

President Barack Obama and First Lady Michelle Obama wear 3-D glasses while watching a TV commercial during Super Bowl 43, Arizona Cardinals vs. Pittsburgh Steelers, in the family theater of the White House on February 1, 2009. Guests included family, friends, Cabinet members, staff members, and bipartisan members of Congress.

Close-up detail of President Obama's signature on the American Recovery and Reinvestment Act, and a pen used for the signing, aboard Air Force One on a flight from Buckley Air Force Base, Denver, Colorado to Phoenix, Arizona, February 17, 2009.

President Barack Obama attends a ceremony at Dover Air Force Base in Dover, Delaware, October 29, 2009, for the dignified transfer of 18 U.S. personnel who died in Afghanistan.

President Barack Obama's signature on the Patient Protection and Affordable Care Act at the White House, March 23, 2010. The President signed the Act with 22 different pens.

President Barack Obama takes the stage carrying an umbrella amidst a downpour at Abraham Lincoln National Cemetery in Elwood, Illinois, on Memorial Day. He announced that the event was being canceled because of the severe weather, May 31, 2010.

President Barack Obama and Vice President Joe Biden, along with members of the national security team, receive an update on the mission against Osama bin Laden in the Situation Room of the White House, May 1, 2011. Seated, from left, are: Brigadier General Marshall B. “Brad” Webb, Assistant Commanding General, Joint Special Operations Command; Deputy National Security Advisor Denis McDonough; Secretary of State Hillary Rodham Clinton; and Secretary of Defense Robert Gates. Standing, from left, are: Admiral Mike Mullen, Chairman of the Joint Chiefs of Staff; National Security Advisor Tom Donilon; Chief of Staff Bill Daley; Tony Blinken, National Security Advisor to the Vice President; Audrey Tomason Director for Counterterrorism; John Brennan, Assistant to the President for Homeland Security and Counterterrorism; and Director of National Intelligence James Clapper. Please note: a classified document seen in this photograph has been obscured.

President Barack Obama, Ruby Bridges, and representatives of the Norman Rockwell Museum: Laurie Norton Moffatt, CEO, and Anne Morgan, President of the Board, view Rockwell's painting "The Problem We All Live With" hanging in a West Wing hallway near the Oval Office. Ruby Bridges is the girl in the painting.

President Barack Obama hugs a woman during a visit with First Lady Michelle Obama to Section 60 of Arlington National Cemetery in Arlington, Virginia, September 10, 2011. Section 60 is reserved for military personnel who have lost their lives while fighting in Afghanistan and Iraq.

President Barack Obama and First Lady Michelle Obama, along with former President George W. Bush and former First Lady Laura Bush, pause at the North Memorial Pool of the National September 11 Memorial in New York, New York, on the tenth anniversary of the 9/11 attacks against the United States, September 11, 2011. The North Memorial pool sits in the footprint of the north tower, formerly 1 World Trade Center.

President Barack Obama greets National Security Staff (NSS) for departure photos in the Oval Office, February 1, 2012. Arianna Holmes, age 3, hugs President Obama before taking a departure photo with her family in the Oval Office of the White House.

President Barack Obama and First Lady Michelle Obama wave goodbye to President Shimon Peres of Israel on the North Portico of the White House following the Presidential Medal of Freedom ceremony and dinner in his honor, June 13, 2012.

President Barack Obama hugs First Lady Michelle Obama after she introduces him at a grassroots campaign event at Lagomarcino's Confectionary in Davenport, Iowa, August 15, 2012.

President Barack Obama, First Lady Michelle Obama, daughters Sasha and Malia, Vice President Joe Biden, Dr. Jill Biden, and the Biden family wave to the crowd as confetti rains down following the President's election night remarks at McCormick Place in Chicago, Illinois, November 6, 2012. Also pictured are Beau, Hallie, Natalie, Baby Hunter, Hunter, Kathleen, Naomi, Finnegan, Maisy, Ashley Biden, and Howard Krein.

President Barack Obama and President Hamid Karzai of Afghanistan walk on the Colonnade of the White House following their meeting in the Oval Office, January 11, 2013.

President Barack Obama and First Lady Michelle Obama dance at the Commander in Chief Ball at the Walter E. Washington Convention Center in Washington, D.C., January 21, 2013. The President and First Lady danced to "Let's Stay Together" performed by Jennifer Hudson, right.

President Barack Obama wears a crown as he poses with Avery Dodson, Natalie Hurley, Miriam Schaffer, Claire Winton, and Lucy Claire Sharp, all 8-year-old members of Girl Scouts Troop 2612, from Tulsa, Oklahoma. The girls exhibited a Lego flood proof bridge project during the 2014 White House Science Fair in the Blue Room of the White House, May 27, 2014. The fair celebrates the student winners of a broad range of science, technology, engineering and math (STEM) competitions from across the country.

President Barack Obama listens through a door in the Green Room of the White House as Lilly Jay relates her experience as a sexual assault survivor during the launch of the "It's On Us" campaign, a new public awareness and action campaign designed to prevent sexual assault at colleges and universities, in the East Room, September 19, 2014.

President Barack Obama and First Lady Michelle Obama hold hands as they listen to Rep. John Lewis during an event to commemorate the 50th Anniversary of Bloody Sunday and the Selma to Montgomery civil rights marches, at the Edmund Pettus Bridge in Selma, Alabama, March 7, 2015.

First Lady Michelle Obama snuggles against President Barack Obama before a videotaping for the 2015 World Expo, in the Diplomatic Reception Room of the White House, March 27, 2015.

President Barack Obama, First Lady Michelle Obama, daughters Sasha and Malia, Marian Robinson, Vice President Joe Biden, and Dr. Jill Biden greet Pope Francis on his arrival at Joint Base Andrews, Maryland, September 22, 2015.

Vice President Joe Biden reviews his remarks with President Barack Obama before the Vice President announces that he will not be a candidate in the 2016 presidential campaign, in the Oval Office, October 21, 2015.

President Barack Obama and First Lady Michelle Obama greet 106-Year-Old Virginia McLaurin during a photo line in the Blue Room of the White House prior to a reception celebrating African American History Month, February 18, 2016.