You are showing your politics. Neither is a LIE. One was a mistake about something the person did. One was a possible mistake (can you prove differently?) that someone was told. Neither was a knowing falsehood or LIE. For thinking people unaffected by poliics, it is objectively not a close argument.
But do try to prove Warren KNEW she was not Native American and said the reverse.
Yo lawers sho know all da fancy words.
Liawatha KNEW she was lying and how much it would benefit her in her career.
Harvard looked the other way.
Sometimes.. the truth is self evident.
The spin is all yours. You have no proof yet you continue to smear someone. You and the truth are only occasional acquaintances.