Democratic U.S. presidential nominee and former Vice President Joe Biden appears to wear an N-95 mask, as opposed to the black cloth mask he wears during appearances, as he lands aboard his campaign plane at Wilmington Airport in Wilmington, Delaware, U.S. September 13, 2020. REUTERS/Jonathan Ernst

Flames appear on a hillside during the Elkhorn Fire near Red Bluff, California, U.S. August 31, 2020. Picture taken August 31, 2020. Matthew McFarland/Unified Fire Authority/Handout via REUTERS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

Flames appear on a hillside during the Elkhorn Fire near Red Bluff, California, U.S. August 31, 2020. Picture taken August 31, 2020. Matthew McFarland/Unified Fire Authority/Handout via REUTERS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

Flames appear on a hillside during the Elkhorn Fire near Red Bluff, California, U.S. August 31, 2020. Picture taken August 31, 2020. Matthew McFarland/Unified Fire Authority/Handout via REUTERS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY.

Centers for Disease Control and Prevention Director Dr. Robert Redfield appears at a Senate Appropriations Subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Centers for Disease Control and Prevention Director Dr. Robert Redfield appears at a Senate Appropriations Subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Centers for Disease Control and Prevention Director Dr. Robert Redfield appears at a Senate Appropriations Subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Centers for Disease Control and Prevention Director Dr. Robert Redfield appears at a Senate Appropriations Subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Centers for Disease Control and Prevention Director Dr. Robert Redfield appears at a Senate Appropriations Subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Director of Center for Disease Control and Prevention Dr. Robert Redfield appears at a Senate Appropriations subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Director of Center for Disease Control and Prevention Dr. Robert Redfield appears at a Senate Appropriations subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Director of Center for Disease Control and Prevention Dr. Robert Redfield appears at a Senate Appropriations subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Director of Center for Disease Control and Prevention Dr. Robert Redfield appears at a Senate Appropriations subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Director of Center for Disease Control and Prevention Dr. Robert Redfield appears at a Senate Appropriations subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Director of Center for Disease Control and Prevention Dr. Robert Redfield appears at a Senate Appropriations subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Director of Center for Disease Control and Prevention Dr. Robert Redfield appears at a Senate Appropriations subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Director of Center for Disease Control and Prevention Dr. Robert Redfield appears at a Senate Appropriations subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Assistant Secretary of Health and Human Services for Health Adm. Brett Giroir and Director of Center for Disease Control and Prevention Dr. Robert Redfield appear at a Senate Appropriations subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Director of Center for Disease Control and Prevention Dr. Robert Redfield appears at a Senate Appropriations subcommittee hearing "Review of Coronavirus Response Efforts" on Capitol Hill, Washington, U.S., September 16, 2020. Andrew Harnik/Pool via REUTERS

Pakistani journalist Bilal Farooqi who according to police has been charged with defaming the country's powerful army and spreading religious hatred, stands with lawyers before appearing for case proceedings at the district City Court in Karachi, Pakistan September 12, 2020. REUTERS/Akhtar Soomro

Pakistani journalist Bilal Farooqi who according to police has been charged with defaming the country's powerful army and spreading religious hatred, poses before appearing for case proceedings at the district City Court in Karachi, Pakistan September 12, 2020. REUTERS/Akhtar Soomro

U.S. President Donald President Trump reacts after it was announced Bahrain has joined the United Arab Emirates in striking an agreement to normalize relations with Israel during a brief appearance in the Oval Office at the White House in Washington, U.S., September 11, 2020. REUTERS/Kevin Lamarque

U.S. President Donald President Trump speaks after it was announced Bahrain has joined the United Arab Emirates in striking an agreement to normalize relations with Israel during a brief appearance in the Oval Office at the White House in Washington, U.S., September 11, 2020. REUTERS/Kevin Lamarque

U.S. President Donald President Trump speaks after it was announced Bahrain has joined the United Arab Emirates in striking an agreement to normalize relations with Israel during a brief appearance in the Oval Office at the White House in Washington, U.S., September 11, 2020. REUTERS/Kevin Lamarque

U.S. President Donald President Trump faces reporters after it was announced Bahrain has joined the United Arab Emirates in striking an agreement to normalize relations with Israel during a brief appearance in the Oval Office at the White House in Washington, U.S., September 11, 2020. REUTERS/Kevin Lamarque

U.S. President Donald President Trump faces reporters after it was announced Bahrain has joined the United Arab Emirates in striking an agreement to normalize relations with Israel during a brief appearance in the Oval Office at the White House in Washington, U.S., September 11, 2020. REUTERS/Kevin Lamarque

U.S. President Donald President Trump speaks after it was announced Bahrain has joined the United Arab Emirates in striking an agreement to normalize relations with Israel during a brief appearance in the Oval Office at the White House in Washington, U.S., September 11, 2020. REUTERS/Kevin Lamarque

U.S. President Donald President Trump speaks after it was announced Bahrain has joined the United Arab Emirates in striking an agreement to normalize relations with Israel during a brief appearance in the Oval Office at the White House in Washington, U.S., September 11, 2020. REUTERS/Kevin Lamarque

Spanish designer Agatha Ruiz de la Prada appears at the end of her collection show during the Mercedes Benz Fashion Week, amid the coronavirus disease (COVID-19) outbreak, in Madrid, Spain, September 10, 2020. REUTERS/Juan Medina

An employee of Sotheby's poses with a perfect 100+ carat diamond, the second largest oval diamond of its kind to ever appear at an auction which will be auctioned by Sotheby's in Hong Kong in October, in the Manhattan borough of New York City, New York, U.S., September 9, 2020. Picture taken September 9, 2020. REUTERS/Carlo Allegri

An employee of Sotheby's poses with a perfect 100+ carat diamond, the second largest oval diamond of its kind to ever appear at an auction which will be auctioned by Sotheby's in Hong Kong in October, in the Manhattan borough of New York City, New York, U.S., September 9, 2020. Picture taken September 9, 2020. REUTERS/Carlo Allegri

An employee of Sotheby's poses with a perfect 100+ carat diamond, the second largest oval diamond of its kind to ever appear at an auction which will be auctioned by Sotheby's in Hong Kong in October, in the Manhattan borough of New York City, New York, U.S., September 9, 2020. Picture taken September 9, 2020. REUTERS/Carlo Allegri

An employee of Sotheby's poses with a perfect 100+ carat diamond, the second largest oval diamond of its kind to ever appear at an auction which will be auctioned by Sotheby's in Hong Kong in October, in the Manhattan borough of New York City, New York, U.S., September 9, 2020. Picture taken September 9, 2020. REUTERS/Carlo Allegri

A perfect 100+ carat diamond, the second largest oval diamond of its kind to ever appear at an auction which will be auctioned by Sotheby's in Hong Kong in October, is pictured in the Manhattan borough of New York City, New York, U.S., September 9, 2020. Picture taken September 9, 2020. REUTERS/Carlo Allegri

An employee of Sotheby's poses with a perfect 100+ carat diamond, the second largest oval diamond of its kind to ever appear at an auction which will be auctioned by Sotheby's in Hong Kong in October, in the Manhattan borough of New York City, New York, U.S., September 9, 2020. Picture taken September 9, 2020. REUTERS/Carlo Allegri

An employee of Sotheby's poses with a perfect 100+ carat diamond, the second largest oval diamond of its kind to ever appear at an auction which will be auctioned by Sotheby's in Hong Kong in October, in the Manhattan borough of New York City, New York, U.S., September 9, 2020. Picture taken September 9, 2020. REUTERS/Carlo Allegri

U.S. President Donald Trump is followed by White House Chief of Staff Mark Meadows as he arrives to deliver remarks on judicial appointments during an appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

An usher opens doors as U.S. President Donald Trump arrives to deliver remarks on judicial appointments during an appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

An usher opens doors as U.S. President Donald Trump arrives to deliver remarks on judicial appointments during an appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump arrives to deliver remarks on judicial appointments during an appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump delivers remarks on judicial appointments during a brief appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump delivers remarks on judicial appointments during a brief appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump delivers remarks on judicial appointments during a brief appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump delivers remarks on judicial appointments during a brief appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump delivers remarks on judicial appointments during a brief appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump delivers remarks on judicial appointments during a brief appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump delivers remarks on judicial appointments during a brief appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump delivers remarks on judicial appointments during a brief appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump takes questions after delivering remarks on judicial appointments during a brief appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump delivers remarks on judicial appointments during a brief appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump delivers remarks on judicial appointments during a brief appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump delivers remarks on judicial appointments during a brief appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump delivers remarks on judicial appointments during a brief appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump arrives to deliver remarks on judicial appointments during an appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump delivers remarks on judicial appointments during an appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump arrives to delivers remarks on judicial appointments during an appearance in the Diplomatic Room at the White House in Washington, U.S., September 9, 2020. REUTERS/Jonathan Ernst TPX IMAGES OF THE DAY

Jill Biden, wife of U.S. Democratic presidential nominee Joe Biden, participates in a socially distanced conversation about school reopening in the midst of the coronavirus disease (COVID-19) outbreak during a Biden presidential campaign appearance at the Jeffers Pond Elementary School in Prior Lake, Minnesota, U.S. September 9, 2020. REUTERS/Nicole Neri

Jill Biden, wife of U.S. Democratic presidential nominee Joe Biden, participates in a conversation about school reopening in the midst of the coronavirus disease (COVID-19) outbreak during a Biden presidential campaign appearance at the Jeffers Pond Elementary School in Prior Lake, Minnesota, U.S. September 9, 2020. REUTERS/Nicole Neri

Jill Biden, wife of U.S. Democratic presidential nominee Joe Biden, listens while Qorsho Hassan, Minnesota teacher of the year, speaks during in a conversation about school reopening in the midst of the coronavirus disease (COVID-19) outbreak during a Biden presidential campaign appearance at the Jeffers Pond Elementary School in Prior Lake, Minnesota, U.S. September 9, 2020. REUTERS/Nicole Neri

Senator Amy Klobuchar participates in a conversation about school reopening in the midst of the coronavirus disease (COVID-19) outbreak during a Biden presidential campaign appearance at the Jeffers Pond Elementary School in Prior Lake, Minnesota, U.S. September 9, 2020. REUTERS/Nicole Neri