"Sunday Morning" dishes up a slice of Americana: pie, as sweet and diverse as these 50 United States. Contributor Kelefa Sanneh talks with Stacey Mei Yan Fong (whose "50 Pies/50 States" project has created edible tributes to the nation), and with Sarah Sanneh (proprietor of the Brooklyn restaurant Pies 'n' Thighs) about the perfect pie for the Fourth of July. Air Date: Jul 4, 2021