So Elizabeth Warren isn't a squaw after all. She checked a box on some of her applications saying she was an American Indian thinking, if we are to give her the benefit of the doubt, she was 1/32 Cherokee. Checking that box got her benefits and no one monitored her heritage claims.
Elizabeth Warren is a progressive. In the most credulous analysis of her positions, she's a True Believer in the cause. She devoutly defends Affirmative Action and all manner of racial set asides. In her mind, we need to make sure there are seats at the table for members of underprivileged groups and people who have faced discrimination.
Neither underprivileged nor discriminated against nor appreciably Cherokee, she took one of those seats. Ostensibly, there was someone out there with those qualifications who wanted her slot in college or her faculty job.
In summary, Ms. Warren believes there has been significant discrimination in the US that needs to be rectified through set asides, but only after she gets one of those positions for herself.