Biden takes oath of office, assumes presidency
President Joe Biden has taken the oath of office -- becoming the 46th president of the United States.
Supreme Court Chief Justice John Roberts administered the oath of office.
Roberts congratulated Biden as "Mr. President."
"Hail to the Chief" then played for the first time for Biden.
The oath comes after nearly 50 years in public life for Biden, three tries for the White House and after a victory delayed by vote counts, complicated by potential legal challenges and unacknowledged by the outgoing president.
Laying his hand on the massive Biden family bible held by his wife, Jill Biden, Biden ended the oath with a signature grin on his face.




