Massachusetts Senator Elizabeth Warren visited the Times editorial board next for her endorsement interview. The board pressed how she’ll get her ambitious plans past Mitch McConnell’s Senate, why union workers can’t keep their preferred health care and using trade regulation to encourage the world toward a greener future. Plus: unicorns, billionaire tears and Francis Perkins. Find the unabridged and annotated transcript of Warren's visit to the board at nytimes.com/endorsements. Produced by At Will Media.