John Nichols reports on Monday’s Republican caucuses in Iowa, and explains why Iowa is the state with the biggest shift from blue to red between Obama in 2008 and Trump in 2020.Also: The new film "American Fiction," starring Jeffrey Wright, takes up the question, do Black writers have to "write Black"? The film is based on the novel "Erasure" by Percival Everett, which is considerably wilder and more uncompromising than the film. John Powers comments—he’s critic at Large on NPR’s Fresh Air with Terry Gross. Plus: Fintan O’Toole’s personal history of Ireland since the fifties: how a country dominated by a corrupt Catholic church came to legalize gay marriage and abortion — by referendum. His much-honored ‘personal history’ of Ireland, titled “We Don’t Know Ourselves,” is out now in paperback. (Originally recorded in February, 2023.)