Warren had released the DNA analysis in October 2018, before entering the 2020 race, as she tried to defuse the issue. Trump had long mocked the Massachusetts senator for her ancestral claims and repeatedly referred to her as "Pocahontas," a racial slur he still employs. She said the analysis, performed by a Stanford professor, indicated she had some Native American heritage.
But Warren came under criticism from some tribal officials who said DNA tests were useless to determine tribal citizenship. The Cherokee Nation complained that Warren was "undermining tribal interests with her continued claims of tribal heritage," and in August, Warren offered a public apology at a forum on Native American issues, directly addressing an issue that had proved to be a political liability.
"She's apologized for that, and I don't speak for tribal leaders, but in my mind that is no longer an issue at all," said Kalyn Free, Democratic national committeewoman from Oklahoma who attended the meeting Sunday in Tulsa. "She didn't meet with them because of that issue. She met with them because she genuinely cares about tribal leaders and the issues that are important to them."
Representatives came from several of the 39 federally recognized Native American tribes based in Oklahoma, including the Caddo Nation, Shawnee Tribe and Alabama-Quassarte Tribal Town, said Free, a citizen of the Choctaw Nation.
"It was a very thoughtful meeting," Free said. "She took questions one on one and engaged each of the tribal leaders. She took time to listen to what they had to say and gave very thoughtful responses to the issues."
Free played down the idea the meeting was designed to help Warren atone for what grew into a campaign misstep.
Among the topics discussed were improving the federal Indian Health Service, upholding treaty obligations, improving education for Native American children and fighting substance abuse.
"It was a free-ranging discussion," Warren said later during a visit to Oklahoma City. "We talked about whatever tribal leaders wanted to talk about. I was really grateful for the opportunity to visit with them."
Questions about Warren's heritage first emerged during her race for the Senate in 2012, when reports surfaced that she had listed herself as a racial minority in an academic legal directory.
Warren spoke later Sunday to a rally of more than 2,000 people at Northwest Classen, the Oklahoma City high school where she graduated, telling the familiar story of her family's struggle to maintain its foothold in the middle class in the early 1960s after her father had a heart attack and her mother returned to the workforce.
Warren also responded to a question from a member of the Kiowa Tribe about what policies she would embrace to help Native American people. She promised to maintain all of the U.S. trust and treaty obligations with tribal nations and to appoint a Cabinet-level post to represent them.
"This is an opportunity for us as a country to reset our relationship with the tribal nations and be the kind of America going forward that we want to be," she said.
Two of Warren's brothers, her husband, Bruce Mann, and several other members of her family attended Sunday's rally.
"I spent a lot of hours in this gymnasium," Warren said. "I watched them shoot hoops here, wrestle. I never thought I'd be down on the floor doing something like this."
Warren's nephew, Mark Herring, introduced his "Aunt Betsy."
"Our family is part Republican, part Democrat, and we all support her 100%," Herring said.
Oklahoma votes as part of the March 3 Super Tuesday presidential primary election.
Trump defeated Hillary Clinton in Oklahoma in 2016 by more than 36 percentage points, but the state's capital city is becoming increasingly diverse. Democrats picked up several state legislative seats in 2018's midterm election, and Democrat Kendra Horn knocked off a two-term GOP incumbent to win a congressional seat in Oklahoma City that had been in GOP hands for four decades.