Sen. Elizabeth Warren addressed claims of her Native American heritage at an American Indian policy summit on Wednesday. On Tuesday, The Daily Caller reported that Warren was conspicuously not scheduled to speak at the Tribal Nations Policy Summit in Washington, DC, despite being the only Senator to claim a Native American heritage. (RELATED: Elizabeth Warren Absent From Tribal Nations Policy Summit) Warren apparently changed her mind about appearing at the summit and made a surprise appearance on Wednesday, addressing allegations that she has lied about her ancestry. Cherokee genealogists have traced Warren’s family tree and found no evidence to support...