If there’s one issue thrumming quietly behind Elizabeth Warren’s many policy proposals in her 2020 bid for the presidency, it’s a persistent debate over her past claims of Native American ancestry. Warren’s attempt to engage with more unexpected media brought about exactly that on Friday, when an appearance on radio show The Breakfast Club saw co-host Charlamagne tha God repeatedly recalling the controversy—even labeling the Massachusetts senator “the original Rachel Dolezal.”

The subject arose as hosts questioned why she previously claimed Native American heritage, to which Warren responded “I learned about my family the same way most people learn about their family—from my mama, and my daddy, and my aunts and my uncles. It’s what I believed.” Warren then attempted to pivot toward policy positions on education, housing and healthcare, but the question quickly resurfaced.

“Why’d you do that,” Charlamagne pressed, questioning why she’d checked Native American ancestry on her Texas bar registration card and various Harvard documents. Warren reiterated her line about being misinformed by her family, before cementing she no longer held onto that claim. “I'm not a person of color. I'm not a citizen of a tribe—tribal citizenship is an important distinction—and I shouldn't have done it.”

Warren added that the Boston Globe concluded her heritage had no effect on positions she’d earned over the years. Still concerned, Charlamagne pressed again. “You're kind of like the original Rachel Dolezal, a little bit,” he added, referring to the former president of the N.A.A.C.P.’s Spokane chapter whose claim to identify as a black woman caused significant controversy. “It’s just what I learned from my family,” Warren finally shrugged off.

The issue is likely to haunt Warren further down the 2020 campaign, especially as President Trump seizes most every opportunity to trot out his derogatory “Pocahontas” nickname. Warren’s past attempts to mitigate the controversy didn’t go so smoothly either—releasing the results of a DNA test in October that allegedly supported her Native American ancestry, before facing significant backlash from Native American leaders. Warren subsequently apologized to the Cherokee nation for her claims.

“We are encouraged by this dialogue and understanding that being a Cherokee Nation tribal citizen is rooted in centuries of culture and laws not through DNA tests,” said Cherokee nation spokesperson Julie Hubbard at the time. “We are encouraged by her action and hope that the slurs and mockery of tribal citizens and Indian history and heritage will now come to an end.”

During the radio interview, Warren said, “I can’t go back” when asked if she wishes she had handled the matter differently.