Democrat presidential candidate Sen. Elizabeth Warren (D-MA) refused to answer a question from a CBS reporter on Sunday about whether it was acceptable for a presidential candidate to lie to the American public.

CBS News campaign reporter Zak Hudak asked Warren: “Is it disqualifying for a presidential candidate to lie to the American public about anything?”

“Uh, I would think that it, you know, how could the American people want someone who lies to them?” Warren responded. “Um, I think that, that we just do our best out there every day, and I hope that’s what happens with everyone.”

WATCH:

“How could the American people want someone who lies to them?” @ewarren says after I asked if it’s disqualifying for a presidential candidate to lie to the American people about anything pic.twitter.com/b4AxH5Bq1m — Zak Hudak (@cbszak) January 19, 2020

The question comes as Warren has had to deal with her biggest weakness as a candidate: her dishonesty and insincerity.

The biggest lie that Warren is notorious for is her false claim that she was Native American, a false claim that she has peddled for decades yet had always refused to provided evidence proving her claim.

In October 2018, Warren took a DNA test and released the results thinking that they proved that she was Native American — they did not.

The friendly report that Warren got from The Boston Globe contained math errors, which led to this correction:

Due to a math error, a story about Elizabeth Warren misstated the ancestry percentage of a potential 6th to 10th generation relative. The generational range based on the ancestor that the report identified suggests she’s between 1/64th and 1/1,024th Native American.

That wasn’t the only major error in the report.

The test found that Warren was potentially 1/1,024th Mexican, Colombian, or Peruvian — not Native American.

Another lie that Warren has had to contend with surrounded how she was going to pay for her government-run healthcare plan as numerous publications have flat out called her a liar over her claims that only billionaires will pay more for healthcare under her plan.

The Washington Examiner wrote, “If the math doesn’t make it clear on its own, let me make Warren’s performance clear: she is lying to you and she thinks that you are stupid.”

“This claim is a straight-up lie,” Reason Magazine wrote.

Another lie that Warren has had to deal with on the campaign trail is her false claim that she was fired from an elementary school teaching job because she was “visibly pregnant.”

“Minutes of an April 21, 1971, Riverdale Board of Education meeting obtained by the Washington Free Beacon show that the board voted unanimously on a motion to extend Warren a ‘2nd year’ contract for a two-days-per-week teaching job,” the Free Beacon reported. “That job is similar to the one she held the previous year, her first year of teaching. Minutes from a board meeting held two months later, on June 16, 1971, indicate that Warren’s resignation was ‘accepted with regret.’”

Comments Warren made in 2007 also contradicted the claims that she has made on the campaign trail:

I was married at nineteen and graduated from college after I’d married, and my first year post-graduation I worked in a public school system with the children with disabilities. I did that for a year, and then that summer I didn’t have the education courses, so I was on an “emergency certificate,” it was called. I went back to graduate school and took a couple of courses in education and said, “I don’t think this is going to work out for me.” I was pregnant with my first baby, so I had a baby and stayed home for a couple of years, and I was really casting about, thinking, “What am I going to do?” My husband’s view of it was, “Stay home. We have children, we’ll have more children, you’ll love this.” And I was very restless about it.

Warren was also caught on camera lying to an African American woman, falsely claiming that she did not send her kids to private school.

Holy shit. I have Warren on video lying about where she sent her kids to school. Sarah Carpenter: "I read that your children went to private schools" Warren: "No my children went to public schools" pic.twitter.com/PEHr3jNvjx — Corey A. DeAngelis (@DeAngelisCorey) November 22, 2019

Warren has also been grilled over the last several days over her claim that Democrat presidential candidate Bernie Sanders told her in a December 2018 meeting that a woman could never be elected president.

Warren’s claim, which was “anonymously” given to CNN to write a report on, was then brought up in CNN’s presidential debate immediately following CNN’s report.

The Federalist reported:

Tuesday night’s CNN debate was a set-up. And that’s not some internet fever dream, it’s an observation shared by reporters from Rolling Stone and The Huffington Post to Fox News and The Daily Caller. Even late-night comedy picked up on the game. The trap was set the day before, when the hosts of the debate published a story claiming that in 2018, during a private meeting between Sens. Bernie Sanders and Elizabeth Warren, Sanders told Warren a woman can not win the presidency. Reporters have grown even lazier and more comfortable thinking readers are stupid, so the initial report cited four anonymous sources for a story about a one-on-one meeting denied by the Sanders campaign. It also included the hysterical line that Warren’s campaign “declined to comment,” despite the story coming from the candidate and being filled with anonymous Warren campaign comments. CNN moderator Abby Phillip continued the trend of treating this alleged incident as fact the next night, dismissing Sanders’ denials and opting to ask Warren how the horrible, sexist things Sanders had said made her feel.

WATCH:

"You're saying that you never told Sen. Warren that a woman could not win the election?" Bernie: "That is correct” “What did you think when Sen. Sanders told you a woman could not win the election?" CNN basically called Bernie a liar.#CNNisGarbage

pic.twitter.com/7t2cOLS3iW — Benny (@bennyjohnson) January 15, 2020

This report has been updated to include additional information.