Warren’s primary opponent, Marisa DeFranco, who is trying to raise her profile in the race, is arguing that voters should be concerned about Warren’s “lack of a clear, consistent message” in response to the Native American controversy.

“I’m not sure what her answer is because it’s been so various,” DeFranco said today.

DeFranco said that, in general, it is commendable for universities to trumpet their hiring of minority professors. But she questioned why Harvard listed Warren as a minority.

“Come on, you have to look like a person of color,” she said. “You actually have to be a person of color.”