America has a long tradition of unruly presidential brothers, none more famous than Billy Carter. He became so well-known for his antics, there was even a brand of beer named for him. Mo speaks to President Jimmy Carter and Billy's widow and six children about the surprisingly complicated man behind the caricature.See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.