'The Circus'; Tim Cook

Mark Halperin and John Heilemann—co-hosts of a new Showtime series called "The Circus: Inside the Greatest Political Show on Earth"—are joined by political strategist Mark McKinnon to discuss the front-runners for party presidential nominations heading into Super Tuesday. In an interview taped in September, 2015, Tim Cook, chief executive officer of Apple Inc., talks about the legacy of Steve Jobs and how the company's culture allows it to create products that change the world.