A person arrives to give blood at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

Blood donations are organized at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

Sean Rabbitt sits in a chair six feet apart for social distancing while waiting to give blood inside a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A portrait of President George Washington hangs as people give blood at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A portrait of President George Washington hangs as a phlebotomist raises the arm of a blood donor at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A portrait of President George Washington hangs as a phlebotomist raises the arm of a blood donor at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A phlebotomist sanitizes a station at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A phlebotomist inserts a needle to draw blood at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A phlebotomist sanitizes a station as a portrait of President George Washington hangs while people give blood at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A portrait of President George Washington hangs as blood donations are stored at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A portrait of President George Washington hangs as people give blood at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

People wait in a recovery area after donating blood inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A portrait of President George Washington hangs as people give blood at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A portrait of President George Washington hangs as people give blood at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A portrait of President George Washington hangs as people give blood at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A portrait of President George Washington hangs as people give blood at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A portrait of President George Washington hangs as people give blood at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

People sit in chairs six feet apart for social distancing while waiting to give blood at a donation center inside the White House East Room replica at the Richard Nixon Presidential Library and Museum to help with a shortage of blood donations due to the coronavirus disease (COVID-19) outbreak, in Yorba Linda, California, U.S., March 30, 2020. REUTERS/Patrick T. Fallon

A bust of former U.S. President Richard Nixon is displayed in the corridor where Senate Minority Leader Chuck Schumer (D-NY) holds his weekly news conference at the U.S. Capitol in Washington, U.S. December 17, 2019. REUTERS/Jonathan Ernst

Visitors are seen in front of exhibits showing the U.S. president Richard Nixon's 1972 visit to China, during an exhibition on China's achievements marking the 70th anniversary of the founding of the People's Republic of China (PRC) at the Beijing Exhibition Center, in Beijing, China September 24, 2019. REUTERS/Jason Lee

Former White House counsel John Dean, a key figure in the Watergate scandal, signs a golf ball once purportedly used by former President Richard Nixon and other Watergate memoribilia for a collector after testifying about the Mueller Report before a House Judiciary Committee hearing on Capitol Hill in Washington, U.S. June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, is sworn in prior to testifying before a House Judiciary Committee hearing titled, "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, testifies before a House Judiciary Committee hearing entitled "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, opens the report from Special Counsel Robert Mueller to a heavily redacted page as he prepares to testify before a House Judiciary Committee hearing entitled "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, is sworn in to testify before a House Judiciary Committee hearing entitled "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, arrives to testify before a House Judiciary Committee hearing entitled "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, arrives to testify before a House Judiciary Committee hearing entitled "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, arrives to testify before a House Judiciary Committee hearing entitled "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, testifies before a House Judiciary Committee hearing titled "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, testifies before a House Judiciary Committee hearing entitled "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, arrives to testify before a House Judiciary Committee hearing titled "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, testifies before a House Judiciary Committee hearing entitled "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, testifies before a House Judiciary Committee hearing entitled "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, is sworn in prior to testifying before a House Judiciary Committee hearing titled, "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, arrives to testify before a House Judiciary Committee hearing hearing entitled "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, testifies before a House Judiciary Committee hearing titled, "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, testifies before a House Judiciary Committee hearing titled, "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, testifies before a House Judiciary Committee hearing titled, "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, testifies before a House Judiciary Committee hearing titled, "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, is sworn in prior to testifying before a House Judiciary Committee hearing hearing titled, "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, is sworn in prior to testifying before a House Judiciary Committee hearing hearing titled, "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, is sworn in prior to testifying before a House Judiciary Committee hearing hearing titled, "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, is sworn in prior to testifying before a House Judiciary Committee hearing hearing titled, "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, arrives to testify before a House Judiciary Committee hearing hearing titled, "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

Former White House counsel John Dean, a key figure in the Watergate scandal that toppled former President Richard Nixon, testifies before a House Judiciary Committee hearing hearing titled, "Lessons from the Mueller Report" on Capitol Hill in Washington U.S., June 10, 2019. REUTERS/Jonathan Ernst

A man reads and listens to a file with the transcription of a telephone conversation between U.S. President Richard Nixon and former U.S. Secretary of State Henry Kissinger, during an exhibit of recently declassified CIA documents that show U.S. involvement in Pinochet's coup in 1973 in Santiago, Chile October 26, 2017. Picture taken October 26, 2017. REUTERS/Carlos Vera

A bust of former U.S. President Richard Nixon sits covered and wrapped in plastic during "smoke control system testing" near the Senate Chamber in the U.S. Capitol Building in Washington, D.C., U.S. May 17, 2017. REUTERS/Zach Gibson TPX IMAGES OF THE DAY

Heads of the wax figure of Presidents Richard Nixon, Bill Clinton, and Warren Harding are loaded into a car for transportation after an auction of the Hall of Presidents Museum, which closed in November, in Gettysburg, Pennsylvania, U.S. January 14, 2017. Picture taken January 14, 2017. REUTERS/Mark Makela

Mercedes Brown clutches a head for the wax figure of President Richard Nixon after an auction of the Hall of Presidents Museum, which closed in November, in Gettysburg, Pennsylvania, U.S. January 14, 2017. REUTERS/Mark Makela

A wax figure of President Richard Nixon is loaded into a car after an auction of the Hall of Presidents Museum, which closed in November, in Gettysburg, Pennsylvania, U.S. January 14, 2017. REUTERS/Mark Makela

A wax figure of President Richard Nixon is loaded into a car after an auction of the Hall of Presidents Museum, which closed in November, in Gettysburg, Pennsylvania, U.S. January 14, 2017. REUTERS/Mark Makela

Members of the Patriot Guard hold flags outside an open viewing for former U.S. Senator George McGovern who died on Sunday at the age of 90, in Sioux Falls, South Dakota October 25, 2012. McGovern was a liberal Democrat and fierce opponent of the Vietnam War whose 1972 presidential race against Richard Nixon led to one of the worst electoral defeats in U.S. history. REUTERS/Dave Weaver

Dale Thomsen holds a flag outside an open viewing for former U.S. Senator George McGovern who died on Sunday at the age of 90, in Sioux Falls, South Dakota October 25, 2012. McGovern was a liberal Democrat and fierce opponent of the Vietnam War whose 1972 presidential race against Richard Nixon led to one of the worst electoral defeats in U.S. history. REUTERS/Dave Weaver

Dennis Holmlund of the Patriot Guard holds a flag outside an open viewing for former U.S. Senator George McGovern who died on Sunday at the age of 90, in Sioux Falls, South Dakota October 25, 2012. McGovern was a liberal Democrat and fierce opponent of the Vietnam War whose 1972 presidential race against Richard Nixon led to one of the worst electoral defeats in U.S. history. REUTERS/Dave Weaver (UNITED STATES - Tags: OBITUARY POLITICS)

U.S. Vice President Joe Biden's motorcade sits outside the church where an open viewing for former U.S. Senator George McGovern who died on Sunday at the age of 90, is taking place in Sioux Falls, South Dakota October 25, 2012. McGovern was a liberal Democrat and fierce opponent of the Vietnam War whose 1972 presidential race against Richard Nixon led to one of the worst electoral defeats in U.S. history. REUTERS/Dave Weaver

Members of the Patriot Guard hold flags outside an open viewing for former U.S. Senator George McGovern who died on Sunday at the age of 90, in Sioux Falls, South Dakota October 25, 2012. McGovern was a liberal Democrat and fierce opponent of the Vietnam War whose 1972 presidential race against Richard Nixon led to one of the worst electoral defeats in U.S. history. REUTERS/Dave Weaver

A Code Pink demonstrator dangles a set of handcuffs in front of former United States Secretary of State Henry Kissinger at the Armed Services Committee on global challenges and U.S. national security strategy on Capitol Hill in Washington January 29, 2015. The group wanted Kissinger "arrested" for his role during the Vietnam conflict as Secretary of State for then-President Richard Nixon. REUTERS/Gary Cameron (UNITED STATES - Tags: POLITICS HEADSHOT CIVIL UNREST TPX IMAGES OF THE DAY)

A Code Pink demonstrator (R) dangles a set of handcuffs in front of former United States Secretary of State Henry Kissinger at the Armed Services Committee on global challenges and U.S. national security strategy on Capitol Hill in Washington January 29, 2015. The group wanted Kissinger "arrested" for his role during the Vietnam conflict as Secretary of State for then-President Richard Nixon. REUTERS/Gary Cameron (UNITED STATES - Tags: POLITICS CIVIL UNREST)

A Code Pink demonstrator (R) dangles a set of handcuffs in front of former United States Secretary of State Henry Kissinger at the Armed Services Committee on global challenges and U.S. national security strategy on Capitol Hill in Washington January 29, 2015. The group wanted Kissinger "arrested" for his role during the Vietnam conflict as Secretary of State for then-President Richard Nixon. REUTERS/Gary Cameron (UNITED STATES - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)