WASHINGTON, DC - NOVEMBER 05: U.S. President Donald Trump speaks in the briefing room at the White House on November 5, 2020 in Washington, DC. Votes are still being counted two days after the presidential election as incumbent Trump is in a close race against challenger Democratic presidential nominee Joe Biden, which remains too close to call. (Photo by Chip Somodevilla/Getty Images)
Chip Somodevilla/Getty Images
WASHINGTON, DC - NOVEMBER 05: U.S. President Donald Trump speaks in the briefing room at the White House on November 5, 2020 in Washington, DC. Votes are still being counted two days after the presidential election as incumbent Trump is in a close race against challenger Democratic presidential nominee Joe Biden, which remains too close to call. (Photo by Chip Somodevilla/Getty Images)
Now playing
04:21
Fact Check: Trump's nonstop lies about the election
Now playing
03:01
Sikh Coalition representative: Heartbroken and in pain after shooting
WINDSOR, ENGLAND - APRIL 17: The Duke of Edinburgh's coffin, covered with His Royal Highness's Personal Standard is carried to the purpose built Land Rover during the funeral of Prince Philip, Duke of Edinburgh at Windsor Castle on April 17, 2021 in Windsor, England. Prince Philip of Greece and Denmark was born 10 June 1921, in Greece. He served in the British Royal Navy and fought in WWII. He married the then Princess Elizabeth on 20 November 1947 and was created Duke of Edinburgh, Earl of Merioneth, and Baron Greenwich by King VI. He served as Prince Consort to Queen Elizabeth II until his death on April 9 2021, months short of his 100th birthday. His funeral takes place today at Windsor Castle with only 30 guests invited due to Coronavirus pandemic restrictions. (Photo by Adrian Dennis/WPA Pool/Getty Images)
Adrian Dennis/WPA Pool/Getty Images
WINDSOR, ENGLAND - APRIL 17: The Duke of Edinburgh's coffin, covered with His Royal Highness's Personal Standard is carried to the purpose built Land Rover during the funeral of Prince Philip, Duke of Edinburgh at Windsor Castle on April 17, 2021 in Windsor, England. Prince Philip of Greece and Denmark was born 10 June 1921, in Greece. He served in the British Royal Navy and fought in WWII. He married the then Princess Elizabeth on 20 November 1947 and was created Duke of Edinburgh, Earl of Merioneth, and Baron Greenwich by King VI. He served as Prince Consort to Queen Elizabeth II until his death on April 9 2021, months short of his 100th birthday. His funeral takes place today at Windsor Castle with only 30 guests invited due to Coronavirus pandemic restrictions. (Photo by Adrian Dennis/WPA Pool/Getty Images)
Now playing
02:29
See memorable moments from Prince Philip's funeral
Russian opposition leader Alexei Navalny delivers a speech during a demonstration in Moscow on September 29, 2019. - Thousands gathered in Moscow for a demonstration demanding the release of the opposition protesters prosecuted in recent months. Police estimated a turnout of 20,000 people at the Sakharov Avenue in central Moscow about half an hour after the start of the protest, which was authorised. The demonstrators chanted "let them go" and brandished placards demanding a halt to "repressions" of opposition protesters. (Photo by Yuri KADOBNOV / AFP) (Photo by YURI KADOBNOV/AFP via Getty Images)
YURI KADOBNOV/AFP/Getty Images
Russian opposition leader Alexei Navalny delivers a speech during a demonstration in Moscow on September 29, 2019. - Thousands gathered in Moscow for a demonstration demanding the release of the opposition protesters prosecuted in recent months. Police estimated a turnout of 20,000 people at the Sakharov Avenue in central Moscow about half an hour after the start of the protest, which was authorised. The demonstrators chanted "let them go" and brandished placards demanding a halt to "repressions" of opposition protesters. (Photo by Yuri KADOBNOV / AFP) (Photo by YURI KADOBNOV/AFP via Getty Images)
Now playing
02:09
Alexey Navalny 'close to death,' press secretary says
Rep. Marjorie Taylor Greene (R-GA) speaks during a press conference outside the U.S. Capitol on February 5, 2021 in Washington, DC. The House voted 230 to 199 on Friday evening to remove Rep. Marjorie Taylor Greene (R-GA) from committee assignments over her remarks about QAnon and other conspiracy theories.
Drew Angerer/Getty Images
Rep. Marjorie Taylor Greene (R-GA) speaks during a press conference outside the U.S. Capitol on February 5, 2021 in Washington, DC. The House voted 230 to 199 on Friday evening to remove Rep. Marjorie Taylor Greene (R-GA) from committee assignments over her remarks about QAnon and other conspiracy theories.
Now playing
03:20
Marjorie Taylor Greene lashes out at media after backlash over controversial caucus
Getty Images
Now playing
03:00
The end of an era has arrived in Cuba
WISH
Now playing
02:26
Police identify FedEx facility gunman as former employee
Biden speaks from the Treaty Room in the White House on April 14, 2021 in Washington, DC.
Andrew Harnik/Pool/Getty Images
Biden speaks from the Treaty Room in the White House on April 14, 2021 in Washington, DC.
Now playing
02:44
'National embarrassment': Biden reacts to mass shootings
Two military aircraft fly over the White House on April 16, 2021 in Washington, DC. The US Air Force F-22 fighter aircraft flew over Washington as part of the World War I memorial dedication ceremony.
Chip Somodevilla/Getty Images
Two military aircraft fly over the White House on April 16, 2021 in Washington, DC. The US Air Force F-22 fighter aircraft flew over Washington as part of the World War I memorial dedication ceremony.
Now playing
00:52
Watch military flyover interrupt a White House briefing
Shadae McCallum
Now playing
02:30
Soldier arrested after video shows him pushing a Black man
MOSCOW, RUSSIA - APRIL 15:  Russian President Vladimir Putin (L) talks to talks to Foreign Minister Sergey Lavrov during a meeting with Uzbekistan President Islam Karimov in the Kremlin on April 15, 2013 in in Moscow, Russia. Karimov is on a state visit to Russia. (Photo by Sasha Mordovets/Getty Images)
Sasha Mordovets/Getty Images
MOSCOW, RUSSIA - APRIL 15: Russian President Vladimir Putin (L) talks to talks to Foreign Minister Sergey Lavrov during a meeting with Uzbekistan President Islam Karimov in the Kremlin on April 15, 2013 in in Moscow, Russia. Karimov is on a state visit to Russia. (Photo by Sasha Mordovets/Getty Images)
Now playing
02:07
Russia to expel 10 US diplomats in 'tit-for-tat response' to Biden sanctions
WASHINGTON, DC - JUNE 13: Rep. Michelle Lujan Grisham (D-NM) speaks during a news conference on immigration to condemn the Trump Administration's "zero tolerance" immigration policy, outside the US Capitol on June 13, 2018 in Washington, DC. (Photo by Toya Sarno Jordan/Getty Images)
Toya Sarno Jordan/Getty Images
WASHINGTON, DC - JUNE 13: Rep. Michelle Lujan Grisham (D-NM) speaks during a news conference on immigration to condemn the Trump Administration's "zero tolerance" immigration policy, outside the US Capitol on June 13, 2018 in Washington, DC. (Photo by Toya Sarno Jordan/Getty Images)
Now playing
02:39
Governor settles with former campaign staffer who accused her of sexual mistreatment
Former Minneapolis Police officer Derek Chauvin chooses not to testify at his trial on April 15. Sitting to his left is defense attorney Eric Nelson.
Pool
Former Minneapolis Police officer Derek Chauvin chooses not to testify at his trial on April 15. Sitting to his left is defense attorney Eric Nelson.
Now playing
02:10
Derek Chauvin invokes 5th Amendment right at trial
Rep. Matt Gaetz, R-Fla., questions witnesses during a House Armed Services Committee hearing on Capitol Hill, Wednesday, April 14, 2021, in Washington.
Manuel Balce Ceneta/AP
Rep. Matt Gaetz, R-Fla., questions witnesses during a House Armed Services Committee hearing on Capitol Hill, Wednesday, April 14, 2021, in Washington.
Now playing
02:59
Women detail late-night parties with Gaetz
Pool
Now playing
06:07
Fauci fires back at Rep. Jim Jordan during heated exchange
President Joe Biden arrives to speak from the Treaty Room in the White House on Wednesday, April 14, 2021, about the withdrawal of the remainder of U.S. troops from Afghanistan.
Andrew Harnik/Pool/AP
President Joe Biden arrives to speak from the Treaty Room in the White House on Wednesday, April 14, 2021, about the withdrawal of the remainder of U.S. troops from Afghanistan.
Now playing
02:44
See Biden make historic announcement on US troops in Afghanistan
Avril Haines
POOL
Avril Haines
Now playing
01:09
DNI director gives two primary theories of where Covid-19 transmitted initially
(CNN) —  

Supreme Court Justice Clarence Thomas on Monday claimed election fraud is a threat to America, revealing in a forceful dissent some support for former President Donald Trump and Republicans who have refused to accept the result of the 2020 election.

A longtime conservative, Thomas’ legal views naturally aligned with the Trump administration. But his dissent stands out for how much it subscribed to the Trump worldview of fraud, a notion debunked by election law experts and that has failed overwhelmingly in dozens of state and federal court challenges.

“We are fortunate that many of the cases we have seen alleged only improper rule changes, not fraud. But that observation provides only small comfort,” Thomas said, dissenting as the court rejected a long-pending challenge to Pennsylvania mail-in voting procedures.

“An election free from strong evidence of systemic fraud is not alone sufficient for election confidence,” Thomas wrote.

In his 11-page dissent on Monday, Thomas referred to “fraud” 10 times and emphasized alleged flaws in ballots that arrive by mail. He said review of them may be particularly subjective, for example on the validity of signatures, and require state officials to sift through millions of ballots. Each state determines its own election procedures, for balloting in person or by mail, within the safeguards of the federal Voting Rights Act and Constitution.

“The decision to leave election law hidden beneath a shroud of doubt is baffling,” he wrote. “By doing nothing, we invite further confusion and erosion of voter confidence. Our fellow citizens deserve better and expect more of us.”

The 2020 election, occurring in the midst of the coronavirus pandemic, increased mail-in voting and then led to a raft of lawsuits, ending with no proof of election fraud, let alone widespread cheating that could have flipped an election result.

Defenders of Trump, who lost the November 3 presidential contest to Joe Biden, have claimed rampant fraud and a “stolen” election, without evidence.

02:27 - Source: CNN
Supreme Court justice's wife sparked past controversy (2018)

Thomas’ wife, Ginni, was a highly visible Trump loyalist, attending numerous White House events including his 2020 victory celebration when the Senate acquitted him in the first impeachment trial. She generated recent headlines as it became known she apologized to former Thomas judicial clerks for her post-election backing of Trump and early support for the January 6 rally that turned into a deadly riot inside the US Capitol.

“Many of us are hurting, after leaving it all on the field, to preserve the best of this country,” she wrote in one post-election email.