There isn't any difference; however, as I indicated, Warren didn't claim to be Native American. She claimed to have some Native American ancestry.
What exactly is/was Dr. Warren's declaration re: her Native American (NA) ancestry? AFAIK, she has said "
she grew up with family stories about both grandparents on her mother’s side having some Cherokee or Delaware blood."
- Did she assert membership in or that she's a member of a specific NA tribe, namely the Cherokee tribe? No.
- Did she assert merely having NA ancestry? Yes.
- Did she assert she's a woman of color? No.
- Did she assert she's a Native American? No.
Truly, if you don't understand the difference between saying one has some bit of XYZ ancestry/blood and being a member of XYZ ethnic identity group, you and I have nothing further to say on this matter because you want to make Warren's words be and mean something they are not and do not mean.
I have ancestors from a number of extractions, and like Warren, there's tale of at least one of my forebears having been a Native American, but most of my ancestry that's been identified is Dutch, English, Spanish German, Italian and French.
- If a DNA test reveals I have at least one Native American ancestor, my saying I have Native American ancestry/blood is an accurate statement and has nothing to do with whether I am today a white guy or a Native American.
- Does my having the mix of ancestors I do make me Dutch or French, etc? No. It no more makes me be those things than would my indeed having a Native American ancestor make me be Native American.
I see no reason why I should be derided for telling folks there's lore of Native American ancestors in our family if that is indeed the stories I've been told.
Similarly, there are some folks of color in the U.S. who are descended from my European ancestors and who can accurately assert that they have European blood/ancestry, yet they are nor claiming to being Europeans or anything other than Americans -- ethnically, culturally and politically. That too is all I claim to be.
I find ridiculous the "debate" about Warren's assertion and discovery that she has Native American ancestors. The woman isn't claiming to be a Native American, she's merely claiming to have some Native American blood in her, and the DNA test has shown that she does. In contrast, there are plenty of well known folks (some perhaps, in certain quarters, more well known than Sen. Warren, if Twitter followers is any indication) who openly share the nature and extent of the multiraciality, yet there's no national outcry or debate about their having done so.