Warren, who officially announced her bid for the Democratic presidential nomination on Saturday, made the remark at the Veterans Memorial Building in Cedar Rapids in front of a crowd of several hundred.
"Elizabeth Warren has already been exposed as a fraud by the Native Americans she impersonated and disrespected to advance her professional career, and the people of MA she deceived to get elected", Trump campaign manager Brad Parscale said in a statement. "We're going to chase after those every day?"
According to HuffPost, Warren delivered a speech at the National Conference of American Indians, during which she did not address the aforementioned controversy - which grew larger last week when it was discovered she wrote "Native American" on a State Bar of Texas application in 1986.
Warren herself may "not be a free person" soon. Elizabeth Warren and her claims of American Indian heritage.
In January, Warren apologized to the Cherokee Nation after releasing the results of a DNA test that showed a tiny sliver of her ancestry was Native American.
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The offensive remark, largely characteristic of the 41-year-old's pugnacious and near-constant social media presence, is another in a series by the President and his son to engage in racism to smear the Massachusetts Democrat.
On Saturday, Trump appeared to invoke the Trail of Tears, the infamously cruel forced relocation of Native Americans in the early 19th century that caused thousands of deaths, when he mocked Warren on Twitter: "See you on the campaign TRAIL, Liz".
"Today Elizabeth Warren, sometimes referred to by me as Pocahontas, joined the race for President,"he tweeted, seemingly ignoring Native American groups' past calls to stop invoking the name of a historical Native American figure in a way to criticize a political opponent".
She was not the only Democrat to suggest obliquely in Iowa this weekend that Trump might meet a swift downfall of some kind. Sen.
"He is just completely ignorant when it comes to Native Americans, Native American history", Haaland said.
Warren has chose to ignore what she called Trump's "every day efforts to divide and distract", a campaign spokesperson told CNN.