Former President Barack Obama on "My Brother's Keeper" Initiative, Gun Reform and Legacy

"CBS Mornings" co-host Nate Burleson sits down with former President Barack Obama in Chicago to talk about the latest "My Brother's Keeper" initiative, the issue of gun violence in America and what keeps him up at night. He also tells Burleson that he didn't "fully appreciate" the "degree of stress and tension" former First Lady Michelle Obama was under while they were in the White House.