Pulitzer Prize-winning historian Eric Foner talks about how current issues of racial inequality, voter suppression and mass incarceration relate to the 13th, 14th and 15th amendments. They were added to the constitution after the Civil War and gave black men the right to vote, gave people equal protection under the laws, and granted citizenship to all people born in the U.S. His new book is 'The Second Founding.'

Also, we remember pioneering NPR journalist Cokie Roberts, who died today at 75.