At the age when most kids are finding their way around the halls of elementary school, Diane Lane was touring the world as an actress. By the time she was a teenager, she became a household name after starring alongside Laurence Olivier in the film A Little Romance. In this week’s “Sunday Sitdown,” Willie Geist gets together with the star to talk about her more than four decades on screen, including her latest role as the President of the United States in a new series that takes place in a post-apocalyptic, pandemic-stricken world.