Barack Obama's presidency

President Barack Obama attends the 2014 Nuclear Security Summit in March 2014 in the Hague, Netherlands. As his presidency winds down, here's a look at some key moments of his administration.

Barack Obama's presidency

Michelle Obama brushes specks from the coat of then-Sen. Obama inside the Old State Capitol in Springfield, Illinois, just before he announced his candidacy for president of the United States in February 2007. Their daughters Malia, left, and Sasha wait in the foreground.

Barack Obama's presidency

Obama appears on "Meet the Press" with Tim Russert, right, in Des Moines, Iowa, in November 2007.

Barack Obama's presidency

Obama shakes hands with supporters after addressing a rally in Concord, New Hampshire, in January 2008.

Barack Obama's presidency

Obama gives a speech at the National Constitution Center in Philadelphia in March 2008.

Barack Obama's presidency

Obama speaks at the 2008 Democratic National Convention in Denver, Colorado.

Barack Obama's presidency

Obama stands on stage in Chicago, Illinois, with his family after defeating Republican presidential candidate John McCain on November 4, 2008.

Barack Obama's presidency

Left to right: Presidents George H. W. Bush, Obama, George W. Bush, Bill Clinton, and Jimmy Carter pose for photos in the Oval Office in January 2009.

Barack Obama's presidency

Obama is sworn in by Chief Justice John Roberts as the 44th President of the United States on the West Front of the Capitol in Washington on January 20, 2009.

Barack Obama's presidency

As retired military officers stand behind him, Obama signs an executive order to close down the detention center at Guantanamo Bay in January 2009.

Barack Obama's presidency

Obama and Vice President Joe Biden look at solar panels as they tour the solar array at the Denver Museum of Nature and Science on February 17, 2009. That same day, Obama signed the American Recovery and Reinvestment Act.

Barack Obama's presidency

A soldier hugs Obama during his surprise visit to Camp Victory just outside Baghdad, Iraq, in April 2009.

Barack Obama's presidency

Barack Obama's presidency

Obama kisses Sonia Sotomayor's cheek after announcing her as his nominee for justice on the Supreme Court in May 2009.

Barack Obama's presidency

Palestinian security forces in Jenin, West Bank, listen to Obama speak from Cairo University in Egypt in June 2009. The Palestinian Authority hailed as a "good beginning" Obama's speech to the Muslim world in which he reiterated his support for a Palestinian state.

Barack Obama's presidency

Obama and first lady Michelle Obama meet with Pope Benedict XVI in Vatican City in July 2009.

Barack Obama's presidency

Obama hosts the Apollo 11 astronauts, from left to right, Edwin "Buzz" Aldrin, Michael Collins and Neil Armstrong in the Oval Office on July 20, 2009, the 40th anniversary of the moon landing.

Barack Obama's presidency

Police Sgt. James Crowley, second right, of Cambridge, Massachusetts, speaks with Harvard Professor Henry Louis Gates Jr., second left, alongside Obama and Biden as they share beers on the South Lawn of the White House in July 2009. In an effort to curb controversy, the so-called "Beer Summit," was held after Crowley arrested Gates at his own home which sparked tensions and racial furor.

Barack Obama's presidency

Obama salutes during the transfer of Sgt. Dale R. Griffin at Dover Air Force Base in Dover, Delaware, in October 2009. Obama traveled to the base to meet the plane carrying the bodies of 18 U.S. personnel killed in Afghanistan on October 26, including Griffin.

Barack Obama's presidency

Obama walks along the Great Wall of China in November 2009.

Barack Obama's presidency

Obama delivers a speech after receiving the Nobel Peace Prize in Oslo, Norway, in December 2009.

Barack Obama's presidency

Presidents Obama, Clinton, and Bush walk to the Rose Garden to speak about relief efforts for earthquake-stricken Haiti in January 2010.

Barack Obama's presidency

First daughters Sasha and Malia Obama play in the snow with their father in the Rose Garden during a snowstorm that hit Washington in February 2010.

Barack Obama's presidency

Obama's signature on the Affordable Healthcare Act is seen at the White House in March 2010.

Barack Obama's presidency

Obama throws out the opening pitch before a baseball game between the Philadelphia Phillies and the Washington Nationals on Opening Day at Nationals Park in Washington in April 2010.

Barack Obama's presidency

Obama and daughter, Sasha, swim at Alligator Point in Panama City Beach, Florida, in August 2010, in an effort to encourage people to come back to the Gulf Coast after the devastating oil spill.

Barack Obama's presidency

Obama laughs as he makes a statement on his birth certificate in April 2011. Obama said he was amused over conspiracy theories about his birthplace, and said the media's obsession with the "sideshow" issue was a distraction in a "serious time."

Barack Obama's presidency

Obama, Biden, Secretary of State Hillary Clinton and members of the national security team receive live updates in the Situation Room of the White House on the mission to capture or kill Osama bin Laden on May 1, 2011.

Barack Obama's presidency

U.S. Marines of Regiment Combat Team 1 watch from Camp Dwyer in Afghanistan as Obama announces the death of Osama bin Laden on May 2, 2011.

Barack Obama's presidency

Obama enjoys a pint of Guinness in his ancestral home of Moneygall, Ireland, in May 2011.

Barack Obama's presidency

Obama, left, and first lady Michelle Obama, right, meet with Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, at Buckingham Palace in London in May 2011.

Barack Obama's presidency

Obama and Missouri Gov. Jay Nixon walk together in May 2011 during a tour of the devastation of Joplin, Missouri, after it was hit by tornado with winds over 200 mph.

Barack Obama's presidency

Obama delivers remarks to troops and military families at Fort Bragg, North Carolina, on December 14, 2011, marking the exit of U.S. soldiers from Iraq.

Barack Obama's presidency

Obama pays for a dog toy as he shops with his dog Bo at a Petsmart in Alexandria, Virginia, in December 2011.

Barack Obama's presidency

Obama sits on the famed Rosa Parks bus at the Henry Ford Museum in Dearborn, Michigan, in April 2012.

Barack Obama's presidency

British Prime Minister David Cameron, Obama, German Chancellor Angela Merkel, and others watch the overtime shootout of the Champions League final soccer match between Chelsea and Bayern Munich in the Laurel Cabin conference room at Camp David, Maryland, during a G8 Summit in May 2012.

Barack Obama's presidency

Barack Obama's presidency

Obama casts a shadow in this picture as he accepts the 2012 Democratic nomination for president during the final day of the Democratic National Convention in Charlotte, North Carolina, in September 2012.

Barack Obama's presidency

Republican presidential candidate Mitt Romney and Obama participate in the first presidential debate of the 2012 election in Denver, Colorado, in October 2012.

Barack Obama's presidency

Obama celebrates on stage in Chicago after defeating Romney on Election Day November 6, 2012.

Barack Obama's presidency

Obama pauses during his speech at a memorial service in Newtown, Connecticut, for the victims and relatives of the Sandy Hook Elementary School massacre in December 2012.

Barack Obama's presidency

Hundreds of thousands gather at the U.S. Capitol building as Obama is inaugurated for his second term on January 21, 2013.

Barack Obama's presidency

Israeli President Shimon Peres, left, and Prime Minister Benjamin Netanyahu, right, stand with Obama during an arrival ceremony for Obama at Ben Gurion International Airport in Tel Aviv, Israel, in March 2013.

Barack Obama's presidency

Obama adjusts an umbrella held by a Marine during a news conference with Turkish Prime Minister Recep Tayyip Erdogan in the Rose Garden of the White House in May 2013.

Barack Obama's presidency

Jay Leno interviews Obama on "The Tonight Show" in August 2013.

Barack Obama's presidency

White House press secretary Jay Carney fields questions from reporters during a daily press briefing at the White House in September 2013 after Obama's push for Congressional approval for limited military strikes against the Syrian government.

Barack Obama's presidency

Actor and comedian Zach Galifianakis interviews Obama during his appearance on "Between Two Ferns," a digital video series with a laser focus on reaching people aged 18 to 34. The President urged young people to sign up for the new health care plan in the video posted on the website Funny or Die.

Barack Obama's presidency

Obama walks to the Oval Office on August 7, 2014, the same day he announced the beginning of air strikes on ISIS.

Barack Obama's presidency

Obama speaks to the nation from the Cabinet Room of the White House about normalizing diplomatic relations with Cuba in December 2014.

Barack Obama's presidency

Left to right: House Majority Leader Rep. Kevin McCarthy, House Minority Leader Rep. Nancy Pelosi, and Speaker of the House Rep. John Boehner listen as Obama speaks during a meeting in the Cabinet Room of the White House on January 13, 2015.

Barack Obama's presidency

President Barack Obama takes a selfie with podcast host Mark Maron after being a guest on his show "WTF with Marc Maron" in Los Angeles on June 22, 2015.

Barack Obama's presidency

Obama responds to a heckler who interrupted his speech during a reception in honor of LGBT Pride Month in the East Room of the White House in Washington, D.C., June 24, 2015.