Photo gallery: Trump takes oath as 45th president of the United States

Donald Trump is sworn in as the 45th president of the United States as Melania Trump looks on during the 58th Presidential Inauguration at the U.S. Capitol in Washington, Friday, Jan. 20, 2017. (AP Photo/Andrew Harnik)

President-elect Donald Trump arrives during the 58th Presidential Inauguration at the U.S. Capitol in Washington, Friday, Jan. 20, 2017. (AP Photo/Carolyn Kaster)

Supporters react as President-elect Donald Trump appears for his inauguration, Friday, Jan. 20, 2017, in Washington. (AP Photo/John Minchillo)

Vice President Mike Pence, flanked by his wife Karen, waves after being sworn in during the 58th Presidential Inauguration at the U.S. Capitol in Washington, Friday, Jan. 20, 2017.(AP Photo/Patrick Semansky)

Supporters of Donald Trump gather on the National Mall during the inauguration of President-elect Donald Trump, Friday, Jan. 20, 2017, in Washington. (AP Photo/John Minchillo)

Spectators react to the arrival of President-elect Donald Trump during the inauguration of President-elect Donald Trump, Friday, Jan. 20, 2017, in Washington. (AP Photo/John Minchillo)

President Barack Obama, first lady Michelle Obama, President-elect Donald Trump and Melania Trump stand at the White House in Washington, Friday, Jan. 20, 2017. (AP Photo/Evan Vucci)

President Donald Trump waves during the 58th Presidential Inauguration on Jan. 20, 2017 in Washington, D.C. (Olivier Douliery/Abaca Press/TNS)

Vice President-elect Mike Pence arrives during the 58th Presidential Inauguration at the U.S. Capitol in Washington, Friday, Jan. 20, 2017. (AP Photo/Carolyn Kaster)

President-elect Donald Trump, left, shakes hands with President Barack Obama before the 58th Presidential Inauguration at the U.S. Capitol in Washington, Friday, Jan. 20, 2017. (AP Photo/Patrick Semansky)

Former President Bill Clinton and First Lady Hillary Clinton attend the 58th Presidential Inauguration on Jan. 20, 2017 in Washington, D.C. (Olivier Douliery/Abaca Press/TNS)

Former President George W. Bush and his wife Laura arrive for the 58th Presidential Inauguration at the U.S. Capitol for President-elect Donald Trump in Washington, Friday, Jan. 20, 2017. (AP Photo/Patrick Semansky)

John Watson of Jacksonville, Fla. waits in the rain on the National Mall in Washington, Friday, Jan. 20, 2017, before the presidential inauguration of Donald Trump, Friday, Jan. 20, 2017, in Washington. (AP Photo/John Minchillo)

Donald Trump supporters stand on the West front Lawn of the U.S. Capitol before the swearing-in ceremonies on Jan. 20, 2017 in Washington, D.C. (Olivier Douliery/Abaca Press/TNS)

President Donald Trump delivers his inaugural address after being sworn in as the 45th president of the United States during the 58th Presidential Inauguration at the U.S. Capitol in Washington, Friday, Jan. 20, 2017. (AP Photo/Susan Walsh)

President Donald Trump waves after delivering his inaugural address after being sworn in as the 45th president of the United States during the 58th Presidential Inauguration at the U.S. Capitol in Washington, Friday, Jan. 20, 2017.(AP Photo/Patrick Semansky)

President Donald Trump pumps his fist after delivering his inaugural address after being sworn in as the 45th president of the United States during the 58th Presidential Inauguration at the U.S. Capitol in Washington, Friday, Jan. 20, 2017. (AP Photo/Patrick Semansky)

President Donald Trump speaks after being sworn in as the 45th president of the United States during the 58th Presidential Inauguration at the U.S. Capitol in Washington, Friday, Jan. 20, 2017. (AP Photo/Andrew Harnik)

Former President Barack Obama and his wife Michelle wave to the crowd as they board an Air Force jet to depart Andrews Air Force base in Andrews Air Force Base, Md., Friday, Jan. 20, 2017. (AP Photo/Steve Helber)

Eric Trump, center, and Donald Trump, Jr., attend the presidential inauguration of their father Donald Trump on Capitol Hill in Washington, Friday, Jan. 20, 2017. (Saul Loeb/Pool Photo via AP)

President Donald Trump gives his inaugural address on Capitol Hill in Washington, Friday, Jan. 20, 2017. (Ricky Carioti/The Washington Post, Pool Photo via AP)

People listen during the inaugural address by President Donald Trump during the Inauguration on Capitol Hill in Washington, Friday, Jan. 20, 2017. (Ricky Carioti/The Washington Photo/Pool Photo via AP)

President Donald Trump is joined by the Congressional leadership and his family before formally signing his cabinet nominations into law, Friday, Jan. 20, 2107, in the President's Room of the Senate on Capitol Hill in Washington. From left are, Vice President Mike Pence, the president's wife Melania Trump, their son Barron Trump, and House Speaker Paul Ryan of Wis. (AP Photo/J. Scott Applewhite, Pool)

Former President Barack Obama and his wife Michelle board an Air Force jet as they prepare to depart Andrews Air Force base in Andrews Air Force Base, Md., Friday, Jan. 20, 2017. (AP Photo/Steve Helber)

Victoria Barette from Jacksonville, Fla., holds her hand over her heart as she and other patrons watch Donald Trump take the presidential oath of office on the multiple video screens during an Inauguration Watch Party at Whiskey Jax in Marsh Landing, Fla., Friday, 20. 2017. (Bob Self/The Florida Times-Union via AP)