Oprah Winfrey always understood the impact she and her groundbreaking talk show had on the U.S., and that’s now the subject of "Watching Oprah: The Oprah Winfrey Show and American Culture," a new exhibit opening Friday at the Smithsonian's National Museum of African American History and Culture. Winfrey, a "60 Minutes" special contributor, joins "CBS This Morning" to discuss the exhibit and her reflections on the impact of her show.
