2020 Democratic presidential hopeful Pete Buttigieg barnstorms Iowa 2020 Democratic candidate and South Bend, Indiana Mayor Pete Buttigieg tells CBS News that with Election Day a year away, "It matters what you care about and whether you're committed to uniting rather than dividing the American people as president." Watch Buttigieg's full interview with CBSN's political reporter Caitlin Huey-Burns on Monday morning.