https://www.bostonglobe.com/news/pol...SVO/story.html
During her academic career as a law professor, she had her ethnicity changed from white to Native American at the University of Pennsylvania Law School, where she taught from 1987 to 1995, and at Harvard University Law School, where she was a tenured faculty member starting in 1995. (She was a visiting professor at Harvard during the 1992-1993 academic year.)
In an interview with the Globe published last month, Warren explained that she identified herself as Native American in the late 1980s and early 1990s as many of the matriarchs of her family were dying and she began to feel that her family stories and history were becoming lost.
Ivy League universities, like the ones where Warren taught, were under great pressure to show they had diverse staffs.
She didn't say she had ancestry she claimed to be one even though she has less ancestry than your average American, you can't argue with facts.