Tim Walz: What does Harris's VP pick bring to the ticket?

Day three of the Democratic National Convention has wrapped up in Chicago with Kamal Harris’s pick for vice president Tim Wallz taking to the stage. The Minnesota governor, who was little known in America 15 days ago, acknowledged he had never given such a big speech but said that as a former high school football coach, "I have given a lot of pep talks." Monte Francis takes a look at what Walz brings to the Democratic ticket.