NPR's Ailsa Chang talks to Northwestern University political science professor Jeffrey Winters about what some have called the oligarchy shaping American politics and society.

Chief of Staff Susie Wiles could make or break Trump's second term. NPR's Ailsa Chang speaks with Chris Whipple, author of The Gatekeepers: How the White House Chiefs of Staff Define Every Presidency.

NPR's Ailsa Chang talks with actor Timothee Chalamet and director James Mangold about their new movie A Complete Unknown.

NPR's Ailsa Chang talks with Bianca Mabute-Louie about her book Unassimilable – which argues the case against assimilation for the Asian Diaspora and re-imagines where to find community in the U.S.

NPR's Ailsa Chang talks with Pagan Kennedy about her new book The Secret History of the Rape Kit: A True Crime Story, which explains the origin of the rape kit and the woman behind it.

Trump is expected to sign 10 executive actions related to immigration on his first day in office. They're the first steps in a sweeping immigration agenda for his second term.

Hi, Katia. KATIA RIDDLE, BYLINE: Hi, Ailsa. CHANG: So I know that you've been here now for several days, reporting on these fires. What got you interested in this particular aspect of the story?