Sarah Silverman is known for her hard-edged, taboo-breaking standup act and her progressive political bent off stage, but her Emmy-nominated TV series “I Love You, America” shows a different side of the comedian. In this week’s “Sunday Sitdown,” Willie Geist talks to Silverman about traveling the country for that show as she tries to understand today's American divide. She also opens up about her early love of performing and her rise from the basement comedy clubs of New York City to being one of the most successful comics in the business.