No . I ' d like to see any proof you have that she doesn ' t have any native American ancestry . You seem pretty invested in this like of questioning , so I ' m sure you ' ll have something , right ? <| sep |> Another venue for Democratic debate is being convened by Clinton ally David Brock , head of a network of liberal advocacy organizations , including the opposition research group American Bridge 21 st Century and the press watchdog Media Matters for America . Mr . Brock has invited 400 liberal donors to a retreat in Palm Springs , Fla . , in January , during inauguration weekend , to participate in an election postmortem and strategy session . Mr . Brock says he plans to stay out of ideological and strategic fights among Democrats and focus instead on amping up attacks on Mr . Trump and his administration .