In the opening public hearings of the select committee investigating the riot on January 6, 2021, the most damning evidence that former President Donald Trump plotted to overturn a lawful election has come from the people he himself hired.

William Barr told the committee that his former boss had become detached from reality on the subject of his election loss. Barr said that he had told the president that fraud had cost him the election.

In response to Barr's testimony to the committee, Trump lashed out at the man he chose to be his attorney general.

Attorney General William Barr appears on a screen as the House select committee investigating the Jan. 6, 2021, attack on the Capitol listens.
A video of former Attorney General William Barr plays at a hearing on Capitol Hill on June 13. (Jabin Botsford/The Washington Post via Getty Images)

Many of the people who worked for the former president have changed their minds. Trump's four years in the White House saw the highest turnover rate of any administration in US history, and many of those who moved on seem to have left with a bitter taste in their mouths.

The people whose opinions of Trump deteriorated as a result of working for him should be considered. Here is a list of people who have spoken out against their boss.

Mike Pence

A video of former Vice President Mike Pence speaking is shown as committee members look on, including, from left, Rep. Stephanie Murphy, D-Fla., Rep. Pete Aguilar, D-Calif., Rep. Adam Schiff, D-Calif., Rep. Zoe Lofgren, D-Calif., Chairman Bennie Thompson, D-Miss., Vice Chair Liz Cheney, R-Wyo., Rep. Adam Kinzinger, R-Ill., Rep. Jamie Raskin, D-Md., and Rep. Elaine Luria, D-Va.
Video of former Vice President Mike Pence plays at a hearing June 9 of the Jan. 6 select committee. (J. Scott Applewhite/AP)

The January 6 select committee hearings centered on Trump's pressure on his vice president to send the electoral college results back to the states. As they rampaged through the Capitol, Trump and his supporters chanted "Hang Mike Pence!", because he refused to do so.

In a speech to the society, the vice president disclosed his thoughts on the request.

The president is incorrect. I didn't have the right to change the result of the election. There is no idea more un-American than the idea that anyone could pick a president.

Bill Stepien

A screen on June 13 plays the testimony of Bill Stepien, former campaign manager for Donald Trump's 2020 presidential campaign, to the Jan. 6 select committee. (Jonathan Ernst/Reuters)

Bill Stepien, Trump's 2020 campaign manager, told the committee that the dishonest campaign by Trump and his underlings to convince the American people that the election had been "stolen" was the reason he resigned.

Stepien told lawmakers that he stepped away from the job because he didn't think it was professional.

B.J. Pak

Former Georgia US Attorney B.J. Pak, testifies during a hearing by the Select Committee to Investigate the January 6th Attack on the US Capitol in the Cannon House Office Building on June 13, 2022 in Washington, DC. (Mandel Ngan/AFP via Getty Images)

6 committee that he had investigated claims of voter fraud in Georgia, including ones made by Rudy Giuliani about voting improprieties in Fulton County, and found The U.S. attorney resigned after learning that Trump was going to fire him.

Eric Herschmann

Eric Herschmann, former White House attorney, during a video deposition played on Monday, June 13, 2022, on Capitol Hill in Washington. (House Select Committee via AP)

In his testimony to the committee, former White House lawyer Eric Herschmann described conversations he had with right-wing attorney John Eastman, who wrote a memo imploring Vice President Mike Pence to try to influence the 2020 election. Liz Cheney, the vice chair of the January 6 committee, has said that Eastman plotted with Trump to overturn the election results.

The White House lawyer asked Herschmann if he was out of his mind when he was pressed to challenge the results. Herschmann, who had no patience with Trump's claims the election had been rigged against him, then offered Eastman some free legal advice. You'll need it.

Betsy DeVos

Education Secretary Betsy Devos listens during a coronavirus disease (COVID-19) pandemic response event at the White House on Aug. 12, 2020. (Kevin Lamarque/Reuters)

Betsy DeVos, one of Trump's most loyal cabinet members, lost her faith in her former boss when his supporters tried to block the certification of Joe Biden's victory.

It was obvious to me that I couldn't continue when I saw that the president didn't do anything to address the situation.

The 25th Amendment allows for the removal of a president if at least two-thirds of congress agree.

John Bolton

Former National security adviser John Bolton gestures while speaking at the Center for Strategic and International Studies (CSIS) in Washington on Sept. 30, 2019. (Pablo Martinez Monsivais/AP)

JohnBolton clashed with Trump over how to handle U.S. policy towards nations like North Korea. After Trump fired him, he made it clear that he wouldn't be voting for him.

"I hope history remembers him as a one-term president who didn't plunge the country irretrievably into a downward spiral" I have total confidence.

James Mattis

U.S. Defense Secretary James Mattis listens to President Donald Trump at the White House in Washington, U.S., October 23, 2018. (Leah Millis/Reuters)

In his resignation letter to Trump, the former Defense Secretary made it clear that he was against his boss' decisions. Our strength as a nation is tied to the strength of our alliances and partnerships.

In 2020 the president's approach to handling civil unrest stemming from police brutality against African Americans was rebuked by the defense secretary.

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John Kelly

Then White House chief of staff John Kelly listens as President Donald Trump speaks during a lunch with governors in the Roosevelt Room of the White House in Washington June 21, 2018. (Evan Vucci/AP)

The most flawed person John Kelly had ever met was said to be the former White House Chief of Staff.

Kelly told Anthony Scaramucci that the country had made a mistake in electing him.

Kelly thinks we need to step back. I think we need to pay more attention to who we choose.

Richard V. Spencer

Then Acting Defense Secretary Richard Spencer listens during a Cabinet meeting in the Cabinet Room of the White House on July 16, 2019, in Washington. (Alex Brandon/AP)

The Secretary of the Navy was fired by Trump due to his opposition to Trump's insistence that a member of the Navy be allowed to retire with full benefits and with his military rank restored. Spencer wrote in the Washington Post that Trump's intervention reminded him of his lack of understanding of what it means to be in the military or to be governed by a uniform set of rules and practices.

Gary Cohn

Former Director of the U.S. National Economic Council Gary Cohn speaks at a Reuters Newsmaker event in New York City, U.S., September 17, 2018. (Jeenah Moon/Reuters)

After a dispute over the president's plan to impose tariffs on steel and aluminum, Gary Cohn left his positions as a senior adviser and director of the National Economics Council. In Bob Woodward's book "Fear: Trump in the White House," he called Trump a liar.

Tom Bossert

Tom Bossert, then homeland security adviser to President Donald Trump, holds a press briefing to publicly blame North Korea for unleashing the so-called WannaCry cyber attack at the White House in Washington, U.S., December 19, 2017. (Kevin Lamarque/Reuters)

Tom Bossert, Trump's homeland security adviser, told the president that the conspiracy theory that the election was interfered with by Russia was completely false. That didn't stop Trump from trying to get the government in Kyiv to give him damaging information about Joe Biden. In an interview with ABC News, Bossert expressed his anger after he resigned.

The legal team is repeating a discredited theory to the president. It sticks in his mind when he hears it over and over again.

Omarosa Manigault Newman

Omarosa Manigault Newman appears in an exclusive interview on "Meet the Press" in Washington, D.C., Sunday, August 12, 2018. (William B. Plowman/NBC/NBC Newswire/NBCUniversal via Getty Images)

The political aide who was hired by Trump as a political aide fell out with her boss. She published a book detailing the atmosphere of the White House after she was fired.

Donald Trump, who would attack civil rights icons and professional athletes, who would go after grieving black widows, who would say there were good people on both sides, was harming the country. She wrote in her book that she couldn't be a part of it.

Trump called her "wacky" and a "vicious" person.

Stephanie Grisham

Stephanie Grisham, former spokesperson for first lady Melania Trump, arrives for a campaign rally with U.S. President Donald Trump in Orlando, Florida on June 18, 2019. (Carlos Barria/Reuters)

Grisham resigned from the White House on January 6, 2021.

She wrote about Trump's verbal abuse and compromising requests in her book.

Grisham said that the president would want him to tell the public something that was not true or that would make him sound crazy.

If Trump were to win a second term, Grisham said he would be about revenge.

Alyssa Farrah Griffin

Alyssa Farah, then White House director of strategic communications, speaks to members of the media outside the White House in Washington, D.C., U.S., on Friday, Oct. 9, 2020. (Erin Scott/Bloomberg via Getty Images)

The White House Communications Director left her post shortly before the Capitol riot because she said the president knew he had lost the election and continued to peddle false claims about voter fraud.

In an interview with CNN, Farrah said that he knew. After he lost, he told me, but people got around him. I think he might have changed his mind because they got information in front of him and the facts are out there.

In May of this year, she told Vanity Fair that she is trying to reach those who once supported the president, like her.

She said that she hopes to convince the people who once supported her that Trump is bad for the country.

H.R. McMaster

Newly named National Security Adviser Army Lt. Gen. H.R. McMaster listens as U.S. President Donald Trump makes the announcement at his Mar-a-Lago estate in Palm Beach, Florida U.S. February 20, 2017. (Kevin Lamarque/Reuters)

The former National Security Adviser left the White House less than a year after accepting the post. When it came to the war in Afghanistan, the two men had clashed, but McMaster kept his criticism to himself until a month before the election.

When asked if Trump was a bigger threat to election integrity in the U.S. than Russia, he was categorical.

"He'll inadvertently draw his own election into question because he didn't confront Putin directly over his interference in the election", said the aide to the president.

Anthony Scaramucci

Anthony Scaramucci, former White House Communications Director, appears on "Meet the Press" in Washington, D.C., Sunday, Oct. 21, 2018.(William B. Plowman/NBC/NBC Newswire/NBCUniversal via Getty Images)

After 11 days in the Trump administration, the former White House communications director changed his opinion of the president.

In the wake of mass shootings in El Paso, Texas and Dayton, Ohio, as well as Trump's responses, Scaramucci diagnosed the fate of all Trump critics.

In the last three years, I have fully supported the President. He has said things that are not acceptable. I didn't pass the test completely. Soon it will be you and the entire country, he will turn on everyone.

Nikki Haley

Former Ambassador to the United Nations Nikki Haley speaks during the first day of the Republican convention at the Mellon auditorium on August 24, 2020 in Washington, DC (Olivier Douliery/AFP via Getty Images)

Haley criticized the former president a week after the Capitol attack.

"He let us down and we need to acknowledge that," Haley said. We shouldn't have followed him and we shouldn't have listened to him. We cannot allow that to happen again.

Haley was upset by Trump's attack on Pence as a crowd of his supporters chanted that he should be hanged.

"When I tell you I'm angry, it's a lie," she said. Mike has been with that man his whole life. He's been a great friend of that man. He would do that to him even though he had a good relationship with Mike Pence. I'm not happy about it.

Haley said that the criticism was softened in the months after.

Michael Cohen

Michael Cohen, former trusted aide and lawyer to President Donald Trump, testifies before the House Oversight and Reform Committee on Capitol Hill in Washington DC on February 27, 2019. (Melina Mara/The Washington Post)

Micheal Cohen, who served as the vice president of the Trump organization, pleaded guilty to charges of campaign finance violations, tax fraud and bank fraud. Cohen argued in court that he had broken the law at the direction of Trump.

Cohen has helped federal and state investigators with their probes of the former president after his conviction. Following the second public hearing of the select committee, Cohen wrote a series on his attitude towards Trump.

When I testified before the House Oversight Committee, I said that Donald Trump is a liar, a cheat, and a racist.

Over the course of the years, I've called him what. The grifter is in charge. Today, what did we learn? Donald's campaign put out a massive request for people to donate to the legal fund to challenge the big lie, to challenge the electoral vote and the theft that he keeps claiming. They raised a lot of cash. Where did that money go?

Rex Tillerson

Outgoing U.S. Secretary of State Rex Tillerson arrives to deliver farewell remarks at the U.S. State Department in Washington, D.C.on March 22, 2018. During the address, Tillerson remarks that Washington can be a 'mean-spirited town.' (Yuri Gripas/Bloomberg via Getty Images)

In March of last year, Trump fired his Secretary of State, Rex Tillerson, after a year of disagreements over the role of the U.S. allies and whether to pursue a nuclear deal with Iran. The former chairman and CEO of ExxonMobil let it be known that he didn't have an opinion on Trump's intelligence or attention span.

"To go to work for a man who is pretty undisciplined, doesn't like to read, doesn't like to get into the details of a lot of things, but rather just kind of says, 'This,' was challenging for me," said the Secretary of State

His view of Trump had gotten dimmer.

His understanding of U.S. history was limited. It's difficult to have a conversation with someone who doesn't understand the concept.

Deborah Birx

President Donald Trump listens as Dr. Deborah Birx, then White House coronavirus response coordinator, speaks about the coronavirus in the James Brady Press Briefing Room of the White House in Washington on April 22, 2020. (Alex Brandon/AP)

In her memoir, "Silent Invasion: The Untold Story of the Trump Administration, Covid-19, and Preventing the Next Pandemic Before It's Too Late," the former Trump White House coronaviruses response coordinators describes the former president's efforts on COvid-19.

"I looked down at my feet and wished for something to kick and for the floor to open up and swallow me whole."

Trump pivoted to say he had only been joking when she demanded that guidance be reversed.

Anthony Fauci

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, speaks during a press briefing at the White House in Washington on April 13, 2021. (Patrick Semansky/AP)

In the early days of the coronaviruses epidemic, Dr. Anthony Fauci questioned Trump's judgement on how to deal with rising infections and deaths and publicly corrected him.

Fauci said before the election that he would not stay in his job if Trump won. It's not surprising that Trump and his allies try to blame Fauci for the epidemic.

Fauci told the New York Times that his relationship with the president was likely to go south as he continued to appear at daily coronaviruses briefings.

A reporter would say "Well, let's hear from Dr. Fauci" when he said something that wasn't correct. I would have to say, "No, I'm sorry, I don't think that is the case." I didn't take pleasure in disagreeing with the president of the U.S. The office has a lot of respect for me. I had to make a decision. I would be giving a false message to the world if I wasn't careful. It would be tacit approval if I didn't speak up.

I got into some trouble when that happened.

USA TODAY Sports has a cover photo by PeterCasey.

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The rioters got within 2 doors of Vice President Mike Pence's office. See how in this 3D explainer from Yahoo Immersive.