If you've not had the chance to hear Senator Sanders at the National Press Club, here's a chance to correct that; he was in rare form. [Expected the hair to be more muzzled by the last declarative sentence.]     If you were to ask me what his major mistake has been, it’s that he thought that after putting together this extraordinary grassroots movement of young people, minorities and working-class people and getting elected to the presidency, then he thought he could sit down with the Republicans and negotiate all these agreements. He was mistaken.   The implied pulse [...]