attorney general karl racine. live atton journal," 7:00 each morning on c-span. you can also join the conversation on facebook and twitter. >> next on c-span, former president jimmy carter talks about his cancer diagnosis and treatment. then, presidential candidate rick santorum discusses immigration. later, senator marco rubio lays out his economic plan. this weekend on c-span networks, politics, books, and american history. on c-span saturday, live coverage of presidential candidates continues. we will hear from chris christie and bobby jindal. sunday evening at 6:30, scott walker holds a town hall meeting in ashland, new hampshire. on c-span 2 saturday, book tv is live at the inaugural mississippi book festival. coverage features former governor haley barbour, as well as panel discussions on civil rights,