Joe Biden, Kamala Harris era begins in US | In Pics

The White House is seen ahead of Inauguration Day ceremony in Washington. 

Flags line the National Mall towards the Capitol Building as events get underway for President-elect Joe Biden's inauguration ceremony in Washington.

President Donald Trump and first lady Melania Trump walk to board Marine One on the South Lawn of the White House in Washington. 

President-elect Joe Biden speaks at the Major Joseph R. "Beau" Biden III National Guard/Reserve Center in New Castle

Vice President-elect Kamala Harris and President-elect Joe Biden in Wilmington, Del.

President-elect Joe Biden, his wife Jill Biden and Vice President-elect Kamala Harris and her husband Doug Emhoff arrive at the steps of the U.S. Capitol for the start of the official inauguration ceremonies, in Washington.

Vice President Kamala Harris bumps fists with President-elect Joe Biden after she was sworn in during the inauguration.

Joe Biden is sworn in as the 46th president of the United States by Chief Justice John Roberts as Jill Biden holds the Bible during the 59th Presidential Inauguration at the U.S. Capitol in Washington.