Only on the "CBS This Morning" podcast, UCLA professor Kelly Lytle Hernandez joins CBS News' Anne Marie Green to discuss her reaction to earning a MacArthur Fellowship for her work regarding immigration and mass incarceration in the United States. Lytle Hernandez discusses the history of immigration in the U.S. and how that history is still impacting policy today. She's written books including "Migra! A History of the U.S. Border Patrol" and "City of Inmates: Conquest, Rebellion, and the Rise of Human Caging in Los Angeles, 1771–1965."