U.S. President Donald Trump and first lady Melania Trump exit the Marine One helicopter behind a U.S. Secret Service agent wearing a protective face mask because of the coronavirus disease (COVID-19) pandemic, as they return from travel to the Kennedy Space Center in Florida, on the South Lawn of the White House in Washington, U.S., May 27, 2020. REUTERS/Leah Millis

U.S. President Donald Trump and first lady Melania Trump exit the Marine One helicopter behind a U.S. Secret Service agent wearing a protective face mask because of the coronavirus disease (COVID-19) pandemic, as they return from travel to the Kennedy Space Center in Florida, on the South Lawn of the White House in Washington, U.S., May 27, 2020. REUTERS/Leah Millis

White House senior advisers Jared Kushner and Ivanka Trump and their son Joseph wear protective face masks they follow a U.S. Secret Service agent away from Air Force One returning to Washington with her father U.S. President Donald Trump after travel to the Kennedy Space Center in Florida during the coronavirus disease (COVID-19) pandemic at Joint Base Andrews, Maryland, U.S., May 27, 2020. REUTERS/Jonathan Ernst

U.S. Secret Service agents gather for a coronavirus disease (COVID-19) tests prior to U.S. President Donald Trump's departure for travel to the Kennedy Space Center in Florida from the South Lawn at the White House in Washington, U.S., May 27, 2020. REUTERS/Carlos Barria

A woman passes covered mannequins at a Victoria's Secrets boutique amid the coronavirus disease (COVID-19) outbreak in Singapore May 27, 2020. REUTERS/Edgar Su

U.S. President Donald Trump waves past a U.S. Secret Service agent wearing a protective face mask towards a member of the military as he departs after attending ceremonies commemorating the Memorial Day holiday in the midst of the COVID-19 pandemic at Fort McHenry in Baltimore, Maryland, U.S., May 25, 2020. REUTERS/Joshua Roberts

United States Secret Service officers stand beside a line of mock body bags during a funeral procession demonstration for the coronavirus disease (COVID-19) victims outside of the White House in Washington, U.S., May 20, 2020. REUTERS/Tom Brenner

United States Secret Service officers stand beside a line of mock body bags during a funeral procession demonstration for the coronavirus disease (COVID-19) victims outside of the White House in Washington, U.S., May 20, 2020. REUTERS/Tom Brenner

United States Secret Service officers stand beside a line of mock body bags during a funeral procession demonstration for the coronavirus disease (COVID-19) victims outside of the White House in Washington, U.S., May 20, 2020. REUTERS/Tom Brenner

Secret Service officers have a security dog sniff artificial body bags placed by protesters as part of a nationwide "mass funeral protest" outside of the White House as the outbreak of the coronavirus (COVID-19) disease continues in Washington, U.S., May 20, 2020. REUTERS/Leah Millis

U.S. President Donald Trump is accompanied by U.S. Senate Sergeant at Arms and Doorkeeper Michael Stenger, senior adviser Jared Kushner, White House Chief of Staff Mark Meadows and a U.S. Secret Service agent as he arrives for a closed Senate Republican policy lunch meeting to discuss the response to the coronavirus disease (COVID-19) outbreak with senators on Capitol Hill in Washington, U.S., May 19, 2020. REUTERS/Yuri Gripas

A U.S. Secret Service agent waits before U.S. President Donald Trump arrives from Camp David to the White House in Washington, U.S. May 17, 2020. REUTERS/Eric Thayer

A U.S. Secret Service agent stands guard as the Marine One helicopter with President Donald Trump aboard takes off for the Camp David, Maryland presidential retreat from the South Lawn of the White House in Washington, U.S., May 15, 2020. REUTERS/Kevin Lamarque

Trump administration staff, members of the U.S. military and U.S. Secret Service agents stand wearing masks along the West Wing colonnade as U.S. President Donald Trump holds an event about administration efforts to develop a vaccine for the coronavirus disease (COVID-19) pandemic in the Rose Garden at the White House in Washington, U.S., May 15, 2020. REUTERS/Kevin Lamarque

U.S. President Donald Trump talks to U.S. Rep. Scott Perry (R-PA) while a U.S. Secret Service agent looks on as the president walks from Air Force One arriving for a visit to a local medical supplies company during the coronavirus disease (COVID-19) outbreak in Allentown, Pennsylvania, U.S., May 14, 2020. REUTERS/Carlos Barria

U.S. Air Force and Secret Service personnel wearing masks stand at their post beside the steps as President Donald Trump deplanes from Air Force One arriving for a visit to a medical supplies company in Allentown, Pennsylvania, U.S., May 14, 2020. REUTERS/Carlos Barria/Pool

Two U.S. Secret Service uniformed officers watch from their post in front of the West Wing as U.S. President Donald Trump departs on travel to Allentown, Pennsylvania from the South Lawn of the White House in Washington, U.S., May 14, 2020. REUTERS/Tom Brenner

A U.S. Secret Service agent stands in a doorway as U.S. President Donald Trump departs on travel to Allentown, Pennsylvania from the South Lawn of the White House in Washington, U.S., May 14, 2020. REUTERS/Tom Brenner TPX IMAGES OF THE DAY

A U.S. Secret Service agent wears a protective face mask as he stands at his post just outside the Rose Garden while U.S. President Donald Trump holds a coronavirus disease (COVID-19) outbreak response press briefing at the White House in Washington, U.S., May 11, 2020. REUTERS/Kevin Lamarque

A U.S. Secret Service wears a protective face mask as he stands at his post on the West Wing colonnade in front of the Cabinet Room as U.S. President Donald Trump holds a coronavirus disease (COVID-19) outbreak response briefing in the Rose Garden at the White House in Washington, U.S., May 11, 2020. REUTERS/Kevin Lamarque

Members of the White House staff and the U.S. Secret Service stand along the West Wing colonnade prior to U.S. President Donald Trump holding a ccoronavirus disease (COVID-19) outbreak press briefing in the Rose Garden at the White House in Washington, U.S., May 11, 2020. REUTERS/Kevin Lamarque TPX IMAGES OF THE DAY

A worker walks past a closed Victoria's Secret store on 5th Avenue, during the outbreak of the coronavirus disease (COVID-19) in Manhattan, New York city, New York, U.S., May 11, 2020. REUTERS/Mike Segar

A cyclist passes the closed Victoria Secrets shop on New Bond Street, following the outbreak of the coronavirus disease (COVID-19), London, Britain, May 7, 2020. REUTERS/Simon Dawson

A goat is pictured as part of a secret zoo in the garden of the Chequers pub in Woolmer Green, following the outbreak of the coronavirus disease (COVID-19), Knebworth, Britain, May 3, 2020. REUTERS/Andrew Couldridge

Nick and Marian Darter owners of The Chequers pub in Woolmer Green, pose in the goat pen of their secret zoo in their garden, following the outbreak of the coronavirus disease (COVID-19), Knebworth, Britain, May 3, 2020. REUTERS/Andrew Couldridge

A goat pen is pictured as part of a secret zoo in the garden of the Chequers pub in Woolmer Green, following the outbreak of the coronavirus disease (COVID-19), Knebworth, Britain, May 3, 2020. REUTERS/Andrew Couldridge

Visitors at secret zoo in the garden of The Chequers pub in Woolmer Green, following the outbreak of the coronavirus disease (COVID-19), Knebworth, Britain, May 3, 2020. REUTERS/Andrew Couldridge

Nick Darter owner of The Chequers pub in Woolmer Green holds a goat as he talks to visitors of their secret zoo in the garden, following the outbreak of the coronavirus disease (COVID-19), Knebworth, Britain, May 3, 2020. REUTERS/Andrew Couldridge

Nick Darter owner of The Chequers pub in Woolmer Green holds a goat as he talks to visitors of their secret zoo in the garden, following the outbreak of the coronavirus disease (COVID-19), Knebworth, Britain, May 3, 2020. REUTERS/Andrew Couldridge

U.S. President Donald Trump speaks during the daily coronavirus task force briefing as two U.S. Secret Service agents stand guard outside the briefing room at the White House in Washington, U.S., April 22, 2020. REUTERS/Jonathan Ernst

President Donald Trump departs as a U.S. Secret Service agent, Dr Anthony Fauci and Dr Deborah Birx look on as the president answers questions about the Trump administration's guidelines for "Opening Up America Again" during the daily coronavirus task force briefing at the White House in Washington, U.S., April 16, 2020. REUTERS/Leah Millis

President Donald Trump departs as a U.S. Secret Service agent and Dr Anthony Fauci look on after the president announced the Trump administration's guidelines for "Opening Up America Again" during the daily coronavirus task force briefing at the White House in Washington, U.S., April 16, 2020. REUTERS/Leah Millis

President Donald Trump announces the Trump administration's guidelines for "Opening Up America Again" as a U.S. Secret Service agent, Vice President Mike Pence and Dr Anthony Fauci look on during the daily coronavirus task force briefing at the White House in Washington, U.S., April 16, 2020. REUTERS/Leah Millis

A U.S. Secret Service agent keeps watch near a UPS truck parked in the White House driveway during an event "celebrating America's truckers" on the South Lawn at the White House in Washington, U.S., April 16, 2020. REUTERS/Leah Millis

U.S. President Donald Trump speaks during the coronavirus response daily briefing as a U.S. Secret Service agent and Vice President Mike Pence look on at the White House in Washington, U.S., April 10, 2020. REUTERS/Yuri Gripas

U.S. President Donald Trump addresses the daily coronavirus disease (COVID-19) task force briefing as Dr. Deborah Birx, a U.S. Secret Service agent, Vice President Mike Pence and U.S. Labor Secretary Eugene Scalia look on at the White House in Washington, U.S. April 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump addresses the daily coronavirus disease (COVID-19) outbreak task force briefing as Dr. Deborah Birx, a U.S. Secret Service agent and Vice President Mike Pence look on at the White House in Washington, U.S. April 9, 2020. REUTERS/Jonathan Ernst

U.S. President Donald Trump stands in front of a U.S. Secret Service agent and Department of Health and Human Services Secretary Alex Azar during the daily coronavirus task force briefing in the Brady press briefing room at the White House in Washington, U.S., April 3, 2020. REUTERS/Tom Brenner

A Secret Service agent walks in the foreground as the White House can be seen in the middle of the day while the spread of coronavirus disease (COVID-19) continues, in Washington, U.S., March 31, 2020. REUTERS/Leah Millis

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases sits in a seat along the wall beside a U.S. Secret Service agent as Vice President Mike Pence and U.S. President Donald Trump arrive for the daily coronavirus response briefing at the White House in Washington, U.S., March 27, 2020. REUTERS/Jonathan Ernst

U.S. Secret Service agent has his temperature checked by White House staff ahead of President Donald Trump's press briefing with members of the Coronavirus Task Force at the White House, during the coronavirus disease (COVID-19) outbreak, in Washington, U.S., March 22, 2020. REUTERS/Yuri Gripas

Reporters get a sticker from a U.S. Secret Service agent once they are cleared to cover the Trump administration’s daily coronavirus briefing after having their temperature checked a second time at the White House in Washington, U.S. March 17, 2020. REUTERS/Jonathan Ernst

A United States Secret Service officer stands guard along a near-empty Pennsylvania Avenue outside the White House, as Mayor Muriel Bowser declared a State of Emergency due to the coronavirus disease (COVID-19) in Washington, U.S., March 16, 2020. REUTERS/Tom Brenner

U.S. Secret Service agents stand along Pennsylvania Avenue ahead of U.S. President Donald Trump’s address to the nation in Washington, U.S., March 11, 2020. REUTERS/Tom Brenner

An antique Cadillac vehicle drives past a U.S. Secret Service checkpoint outside of the Mar-a-Lago resort in Palm Beach, Florida, U.S., March 8, 2020. REUTERS/Tom Brenner

An armed U.S. Secret Service agent stands guard as the presidential motorcade, (not pictured) departs from the Mar-a-Lago resort in Palm Beach, Florida, U.S., March 8, 2020. REUTERS/Tom Brenner

A police officer halts traffic as an antique Cadillac vehicle drives past a U.S. Secret Service checkpoint into the Mar-a-Lago resort in Palm Beach, Florida, U.S., March 8, 2020. REUTERS/Tom Brenner

U.S. Secret Service Agents stand by as U.S. President Donald Trump, not pictured observes tornado damage through Cookeville Tennessee, U.S., March 6, 2020. REUTERS/Tom Brenner

U.S. Secret Service Agents stand by as U.S. President Donald Trump, not pictured observes tornado damage through Cookeville Tennessee, U.S., March 6, 2020. REUTERS/Tom Brenner

A U.S. Secret Service Agent stands by as U.S. President Donald Trump (not pictured) observes tornado damage through Cookeville, Tennessee, U.S., March 6, 2020. REUTERS/Tom Brenner

U.S. Secret Service agents stand by as U.S. President Donald Trump (not pictured) observes tornado damage in Cookeville, Tennessee, U.S., March 6, 2020. REUTERS/Tom Brenner TPX IMAGES OF THE DAY

U.S. Secret Service agent stands guard as Marine One helicopter with President Donald Trump on boards arrives at the Conservative Political Action Conference (CPAC) annual meeting at National Harbor in Oxon Hill, Maryland, U.S., February 29, 2020. REUTERS/Yuri Gripas

A satirical cartoon from archives on Pope Pius XII, who reigned from 1939-1958, depitcting Cardinal Pacelli hugging a woman is displayed ahead of the full opening of the secret archives to scholars on March 2, at the Vatican, February 27,2020. REUTERS/Guglielmo Mangiapane

A satirical cartoon from archives on Pope Pius XII, who reigned from 1939-1958, depitcting Cardinal Pacelli hugging a woman is displayed ahead of the full opening of the secret archives to scholars on March 2, at the Vatican, February 27,2020. REUTERS/Guglielmo Mangiapane

A banner from archives on Pope Pius XII, who reigned from 1939-1958, is displayed ahead of the full opening of the secret archives to scholars on March 2, at the Vatican, February 27,2020. Banner reads:"Away with Faulhaber the friend of jews! The henchmen of Moscow!". REUTERS/Guglielmo Mangiapane

Encyclical about the mystical body of the church from archives on Pope Pius XII, who reigned from 1939-1958, is displayed ahead of the full opening of the secret archives to scholars on March 2, at the Vatican, February 27,2020. REUTERS/Guglielmo Mangiapane

A man opens a door leading to the shelves where folders containing documents on Pope Pius XII, who reigned from 1939-1958, are stored inside the Vatican archives ahead of the full opening of the secret archives to scholars on March 2, at the Vatican, February 27,2020. REUTERS/Guglielmo Mangiapane

Folders containing documents on Pope Pius XII, who reigned from 1939-1958, are seen inside the Vatican archives ahead of the full opening of the secret archives to scholars on March 2, at the Vatican, February 27,2020. REUTERS/Guglielmo Mangiapane

General view of the Vatican archives ahead of the full opening to scholars of the secret archives containing documents on Pope Pius XII, who reigned from 1939-1958, at the Vatican, February 27,2020. REUTERS/Guglielmo Mangiapane

Folders containing documents on Pope Pius XII, who reigned from 1939-1958, are seen inside the Vatican archives ahead of the full opening of the secret archives to scholars on March 2, at the Vatican, February 27,2020. REUTERS/Guglielmo Mangiapane