60 Minutes 11/29

In an interview with Scott Pelley, Chris Krebs, the former director of the Cybersecurity and Infrastructure Security Agency says there's no evidence voting machines were hacked by foreign power. Descendants of enslaved Africans on last known slave ship to America hope to preserve ancestors' memory. Anderson Cooper tells us more. And James Corden tells Bill Whitaker he's indebted to Mariah Carey for her Carpool Karaoke appearance. Those stories on this week's "60 Minutes." See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.