High-profile ESPN and SiriusXM commentator and bestselling author Stephen A. Smith is a combative and colorful voice on sports. But now, with a weekly political show, in which he interviews government leaders, he is gaining notice in Washington, too. Smith talks with “Sunday Morning” national correspondent Robert Costa about his journey and whether he might soon be on a debate stage.High-profile ESPN and SiriusXM commentator and bestselling author Stephen A. Smith is a combative and colorful voice on sports. But now, with a weekly political show, in which he interviews government leaders, he is gaining notice in Washington, too. Smith talks with “Sunday Morning” national correspondent Robert Costa about his journey and whether he might soon be on a debate stage. Entertainment – CBSNews.com