Elizabeth Warren's Native American problem just got even wor

That back story is hopelessly compromised for Warren now. Every time she talks about growing up or her life before this presidential race, it will dredge up the (ongoing) controversy over why she claimed to be Native American despite very iffy evidence of that claim. She won't be able to escape it. It will be in every story about her past -- and in most voters' minds when they think about which candidate to support.