U.S. President-elect Joe Biden and his wife Jill Biden arrive for 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/Kevin Lamarque

President-elect Joe Biden and his wife Jill Biden arrive for 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

President-elect Joe Biden and his wife Jill Biden arrive for 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/Brendan McDermid

Members of the National Guard stand watch wearing helmets in front of the Supreme Court after reports of a bomb threat circulated hours before President-elect Joe Biden's inauguration as the 46th President of the United States, in Washington D.C., U.S. January 20, 2021. REUTERS/Caitlin Ochs

President-elect Joe Biden arrives with his wife Jill Biden for his inauguration 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/Jonathan Ernst/Pool

U.S. President-elect Joe Biden and his wife Jill Biden arrive for 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/Kevin Lamarque

U.S. President-elect Joe Biden and his wife Jill Biden arrive for 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/Kevin Lamarque

A member of the National Guard stands watch wearing a helmet in front of the Supreme Court after reports of a bomb threat circulated hours before President-elect Joe Biden's inauguration as the 46th President of the United States, in Washington D.C., U.S. January 20, 2021. REUTERS/Caitlin Ochs

U.S. President-elect Joe Biden gestures as he arrives for his inauguration 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/Kevin Lamarque

U.S. President-elect Joe Biden and his wife Jill Biden arrive for 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/Kevin Lamarque

U.S. President-elect Joe Biden and his wife Jill Biden arrive for 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/Kevin Lamarque

President-elect Joe Biden and his wife Jill Biden arrive for 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

U.S. President-elect Joe Biden arrives for his inauguration 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/Kevin Lamarque

The U.S. Capitol building is seen behind a fence with razor wire ahead of the inauguration of President-elect Joe Biden in Washington, U.S., January 20, 2021. REUTERS/Allison Shelley

U.S. President-elect Joe Biden and his wife Jill Biden arrive for 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/Kevin Lamarque

U.S. President-elect Joe Biden and his wife Jill arrive for his inauguration 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/Kevin Lamarque

A National Guard member patrols around the U.S. Capitol building ahead of the inauguration of President-elect Joe Biden in Washington, U.S., January 20, 2021. REUTERS/Allison Shelley

President-elect Joe Biden and his wife Jill Biden arrive for 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

Vice President-elect Kamala Harris and her husband Doug Emhoff arrive for 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/Jonathan Ernst/Pool

A helicopter flies over the Washington Monument and the "Field of Flags" ahead of inauguration ceremonies for President-elect Joe Biden in Washington, U.S., January 20, 2021. REUTERS/Allison Shelley

U.S. President-elect Joe Biden and his wife Jill Biden arrive for 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/Kevin Lamarque

Vice President-elect Kamala Harris and her husband Doug Emhoff arrive for 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/Jonathan Ernst/Pool

President-elect Joe Biden and his wife Jill Biden arrive for 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

U.S. President-elect Joe Biden and his spouse Jill arrive for his inauguration 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/Kevin Lamarque

U.S. Vice President Mike Pence and wife Karen Pence greet Vice President-elect Kamala Harris 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/Brendan McDermid

U.S. Speaker of the House Nancy Pelosi talks to Vice President-elect Kamala Harris as they arrive for 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/Kevin Lamarque

Vice President-elect Kamala Harris and her husband Doug Emhoff 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/Brendan McDermid

A drone flies over the building belonging to the Catholic Church affected by a deadly explosion, in Madrid downtown, Spain, January 20, 2021. REUTERS/Susana Vera

A woman jumps for a picture in front of the "Field of Flags" and the Washington Monument ahead of the inauguration of President-elect Joe Biden in Washington, U.S., January 20, 2021. REUTERS/Allison Shelley

Members of the National Guard stand watch wearing helmets in front of the Supreme Court after reports of a bomb threat circulated hours before President-elect Joe Biden's inauguration as the 46th President of the United States, in Washington D.C., U.S. January 20, 2021. REUTERS/Caitlin Ochs

Vice President-elect Kamala Harris and her husband Doug Emhoff 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/Brendan McDermid

U.S. Vice President Mike Pence attends 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/Kevin Lamarque

U.S. Speaker of the House Nancy Pelosi arrives for 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/Kevin Lamarque

Vice President-elect Kamala Harris and her husband Doug Emhoff greet Former U.S. President Barack Obama and his wife Michelle Obama as Former U.S. President Bill Clinton looks on 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/Brendan McDermid

Vice President-elect Kamala Harris gestures towards U.S. Vice President Mike Pence ahead of 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/Kevin Lamarque

Vice President-elect Kamala Harris and her husband Doug Emhoff arrive for 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/Jonathan Ernst/Pool

The "Field of Flags" and the Washington Monument are seen ahead of the inauguration of President-elect Joe Biden in Washington, U.S., January 20, 2021. REUTERS/Allison Shelley

Vice President-elect Kamala Harris and her husband Doug Emhoff greet Former U.S. President Barack Obama and his wife Michelle 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/Brendan McDermid

Vice President-elect Kamala Harris greets former U.S. President Barack Obama ahead of 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/Jonathan Ernst

The "Field of Flags" and the Washington Monument are seen ahead of the inauguration of President-elect Joe Biden in Washington, U.S., January 20, 2021. REUTERS/Allison Shelley

Vice President-elect Kamala Harris and her husband Doug Emhoff greet Former U.S. President Barack Obama and his wife Michelle Obama as Former U.S. President Bill Clinton and his wife Hillary Clinton look on 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/Brendan Mcdermid

Vice President-elect Kamala Harris and her husband Doug Emhoff arrive on platform 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

Former U.S. President Barack Obama and dormer baseball player Alexander Rodriguez greet 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/Jonathan Ernst/Pool

U.S. President Donald Trump disembarks a plane as he arrives at Palm Beach International Airport in West Palm Beach, Florida, U.S., January 20, 2021. REUTERS/Carlos Barria

Vice President-elect Kamala Harris talks to U.S. Vice President Mike Pence as they arrive for 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/Kevin Lamarque

Vice President-elect Kamala Harris talks to U.S. Vice President Mike Pence as they arrive for 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/Kevin Lamarque

Firefighters spray water on the building belonging to the Catholic Church affected by a deadly explosion, in Madrid downtown, Spain, January 20, 2021. REUTERS/Susana Vera

Vice President-elect Kamala Harris talks to U.S. Vice President Mike Pence as they arrive for 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/Kevin Lamarque

The U.S. Capitol is seen during the inauguration of President-elect Joe Biden as the 46th President of the United States, in Washington, U.S., January 20, 2021. REUTERS/Jim Bourg

Vice President-elect Kamala Harris and her husband Doug Emhoff arrive before 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/Brendan McDermid

Vice President-elect Kamala Harris and her husband Doug Emhoff arrive on platform 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

Vice President-elect Kamala Harris and her spouse Doug Emhoff arrive for 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/Kevin Lamarque

Vice President-elect Kamala Harris and her husband Doug Emhoff arrive for 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/Kevin Lamarque

Vice President-elect Kamala Harris and her husband Doug Emhoff arrive for 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/Kevin Lamarque

Students attend a demonstration in Paris as part of a day of mobilisation within France to "defend the living and study conditions" of students while no date for resuming classes for all has been advanced, France, January 20, 2021. The slogan reads "We will not be the sacrificed generation." REUTERS/Manuel Ausloos

U.S. President Donald Trump waves as he and first lady Melania Trump arrive at Palm Beach International Airport in West Palm Beach, Florida, U.S., January 20, 2021. REUTERS/Carlos Barria

Students attend a demonstration in Paris as part of a day of mobilisation within France to "defend the living and study conditions" of students while no date for resuming classes for all has been advanced, France, January 20, 2021. The slogan reads "Because you have nightmares of what the youth are capable of." REUTERS/Manuel Ausloos

Vice President-elect Kamala Harris and her husband Doug Emhoff arrive for 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/Kevin Lamarque

The "Field of Flags" and the U.S. Capitol building are seen ahead of inauguration ceremonies for President-elect Joe Biden in Washington, U.S., January 20, 2021. REUTERS/Allison Shelley

A man wrapped with a Confederate flag walks near the perimeter ahead of U.S. President-elect Joe Biden's inauguration, in Washington, U.S., January 20, 2021. REUTERS/Eduardo Munoz

U.S. President Donald Trump and first lady Melania Trump depart the White House to board Marine One ahead of the inauguration of president-elect Joe Biden, in Washington, U.S., January 20, 2021. REUTERS/Leah Millis

U.S. Marines stand at the west front of the Capitol before the inauguration of U.S. President-elect Joe Biden, in Washington, U.S. January 20, 2021. REUTERS/Brendan Mcdermid

The "Field of Flags" and the Washington Monument are seen on the National Mall in front of the U.S. Capitol building ahead of inauguration ceremonies for President-elect Joe Biden in Washington, U.S., January 20, 2021. REUTERS/Allison Shelley

Former U.S. President George W. Bush with Rep. Jim Clyburn (D-SC) before 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/Brendan McDermid

The west front of the Capitol before the inauguration of U.S. President-elect Joe Biden, in Washington, U.S. January 20, 2021. REUTERS/Brendan Mcdermid

U.S. Vice President Mike Pence and his spouse Karen arrive for 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/Jonathan Ernst

The "Field of flags" is seen on the National Mall in front of the U.S. Capitol building ahead of inauguration ceremonies for President-elect Joe Biden in Washington, U.S., January 20, 2021. REUTERS/Allison Shelley

U.S. President Donald Trump speaks at the Joint Base Andrews, Maryland, U.S., January 20, 2021. REUTERS/Carlos Barria

The "Field of flags" is seen on the National Mall in front of the U.S. Capitol building ahead of inauguration ceremonies for President-elect Joe Biden in Washington, U.S., January 20, 2021. REUTERS/Allison Shelley TPX IMAGES OF THE DAY

General view of audience 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/Brendan McDermid

Ivanka Trump attends the departure ceremony of U.S. President Donald Trump at the Joint Base Andrews, Maryland, U.S., January 20, 2021. REUTERS/Carlos Barria

A red carpet is being laid for the departure ceremony of U.S. President Donald Trump at the Joint Base Andrews, Maryland, U.S., January 20, 2021. REUTERS/Carlos Barria

U.S. President Donald Trump departs the White House aboard Marine One ahead of the inauguration of President-elect Joe Biden, in Washington, U.S., January 20, 2021. REUTERS/Andrew Kelly

Staff members carry luggage as they prepare for the departure ceremony of U.S. President Donald Trump at the Joint Base Andrews, Maryland, U.S., January 20, 2021. REUTERS/Carlos Barria

Former U.S. President Barack Obama and his wife Michelle Obama arrive for 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/Kevin Lamarque

The military band is seen before 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

A man cleans a glass on the stage ahead of 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/Kevin Lamarque

U.S. President Donald Trump and first lady Melania Trump wave as they board Air Force One at Joint Base Andrews, Maryland, U.S., January 20, 2021. REUTERS/Carlos Barria

U.S. President Donald Trump departs next to first lady Melania Trump from the Joint Base Andrews, Maryland, U.S., January 20, 2021. REUTERS/Carlos Barria TPX IMAGES OF THE DAY

The office of the White House press secretary sits empty prior to U.S. President Donald Trump's departure ahead of the inauguration ceremony of President-elect Joe Biden, in Washington, U.S. January 20, 2021. REUTERS/Leah Millis TPX IMAGES OF THE DAY

Former U.S. President Bill Clinton and his wife Hillary Clinton arrive before 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/Jonathan Ernst/Pool

President-elect Joe Biden and his wife Jill Biden attend a church service before his presidential inauguration, at St. Matthews Catholic Church in Washington, U.S., January 20, 2021. REUTERS/Tom Brenner

President-elect Joe Biden, his wife Jill Biden, Vice President-elect Kamala Harris, her husband Doug Emhoff, U.S. Senator Roy Blunt (R-MO) and Senator Amy Klobuchar (D-MN) arrive ahead of the inauguration of Biden, in Washington, U.S., January 20, 2021. REUTERS/Mike Segar

Tiffany Trump, Donald Trump Jr. and his girlfriend Kimberly Guilfoyle, Eric Trump with his wife Lara, and Ivanka Trump and Jared Kushner pose at Joint Base Andrews, Maryland, U.S., January 20, 2021. REUTERS/Carlos Barria

U.S. President Donald Trump speaks at Joint Base Andrews, Maryland, U.S., January 20, 2021. REUTERS/Carlos Barria

President-elect Joe Biden, his wife Jill Biden, Vice President-elect Kamala Harris and her husband Doug Emhoff salute as they arrive ahead of the inauguration of Biden, in Washington, U.S., January 20, 2021. REUTERS/Mike Segar

Former U.S. President Bill Clinton and Former baseball player Alexander Rodriguez are seen before 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/Jonathan Ernst/Pool

Military personnel standby along Pennsylvania Avenue as U.S. President-elect Joe Biden's motorcade arrives at the U.S. Capitol, in Washington, U.S., January 20, 2021. Picture taken through a vehicle windshield. REUTERS/Tom Brenner

The Air Force One is seen on the tarmac before the departure ceremony of U.S. President Donald Trump at the Joint Base Andrews, Maryland, U.S., January 20, 2021. REUTERS/Carlos Barria TPX IMAGES OF THE DAY

Stairs are vacuumed before the start of 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/Jonathan Ernst/Pool

Speaker of the House Nancy Pelosi (D-CA), her husband Paul Pelosi, U.S. Senate Majority Leader Mitch McConnell (D-NY), his wife and former Secretary of Transportation Elaine Chao, Senator Chuck Schumer (D-NY) and his wife Iris Weinshall, attend a church service before Joe Biden's presidential inauguration, at St. Matthews Catholic Church in Washington, U.S., January 20, 2021. REUTERS/Tom Brenner REFILE-CORRECTING GENDER

The "Field of Flags" is seen ahead of inauguration ceremonies for President-elect Joe Biden in Washington, U.S., January 20, 2021. REUTERS/Allison Shelley

Ivanka Trump and Jared Kushner watch as U.S. President Donald Trump speaks at the Joint Base Andrews, Maryland, U.S., January 20, 2021. REUTERS/Carlos Barria