Bill de Blasio says he isn’t running for president. So why is he in Iowa?

New York City Mayor Bill de Blasio takes a break during his trip to Iowa to sit down with Isaac and assure him he isn't running for president. Hizzoner talks about why he's a polarizing figure, what it's like being a progressive leader in the Trump era, and what he thinks about all the New Yorkers being mentioned as 2020 candidates. Learn more about your ad choices. Visit megaphone.fm/adchoices