Former U.S. President Barack Obama after the inauguration of Joe Biden as the 46th President of the United States on the West Front of the U.S. Capitol in Washington, U.S., January 20, 2021. REUTERS/Jim Bourg 

Former U.S. President Barack Obama during the inauguration of Joe Biden as the 46th President of the United States on the West Front of the U.S. Capitol in Washington, U.S., January 20, 2021. REUTERS/Jim Bourg 

Sasha Obama (C) peeks up as her father, U.S. President Barack Obama, bows his head for the benediction along with Vice President Joe Biden (2nd from R), first lady Michelle Obama (R), older daughter Malia (3rd from R) and the first lady's mother, Marian Robinson (L), during swearing-in ceremonies on the West front of the U.S. Capitol in Washington, January 21, 2013. REUTERS/Jim Bourg (UNITED STATES - Tags: POLITICS)

U.S. Vice President Joe Biden is sworn in as his wife Jill watches during the inauguration ceremony for President Barack Obama in Washington January 20, 2009. REUTERS/Jim Bourg (UNITED STATES) 

U.S. President Barack Obama embraces civil rights icon Reverend Joseph Lowery (2nd L) during the inauguration ceremony in Washington, January 20, 2009. Senator Dianne Feinstein (D-CA) is at left and Vice President Joe Biden at right. REUTERS/Jim Bourg (UNITED STATES) 

U.S. President Barack Obama (R) and Vice President Joe Biden listen to proceedings during the inauguration ceremony in Washington January 20, 2009. REUTERS/Jim Bourg (UNITED STATES)