Sen. Elizabeth Warren (D-MA) reportedly claimed that her “race” was “American Indian” on her State Bar of Texas registration card years ago. According to The Washington Post, which published a copy of the card from 1986, Warren's office did not dispute its authenticity after the card was obtained through an open records request. Warren has not elaborated on whether her or her assistant claimed her American Indian heritage in previous instances—but the registration card reportedly features her handwriting along with her signature. “I can’t go back,” Warren was quoted as telling the Post. “But I am sorry for furthering confusion on tribal sovereignty and tribal citizenship and harm that resulted.” She told the Post that her apology extends to her using the label when she was at the University of Pennsylvania and Harvard University. She also said she was sorry for naming herself as a minority in the Association of American Law Schools directory. Warren recently apologized to Bill John Baker, the principal chief of the Cherokee Nation, about using a DNA test to qualify her Native American label—who was reportedly outraged that she was using such a test to prove her tribal connection.