for you. it's not about doing you a favor. it's about keeping a promise. right now the butch lewis act is designed to make sure we secure and support multi employer pensions, and i support that legislation. reporter: nor elizabeth warren signed the teamster pledge. but she is in iowa campaigning. jon: from small-town mayor to a central player in the presidential race. back in his hometown of central indiana, reviews on him are mixed. >> in the poor neighborhoods of south bend where blight has taken over, the mayor executed a plan to demolish 1,000 homes in 1,000 days. >> he takes a wrecking ball or a