Stephen Miller is the architect of Donald Trump’s extreme policies on immigration. And leaked emails have shown him pushing white-power ideology cloaked in pseudo-science. So how did an affluent kid from the California suburbs — who liked mobster movies and wore gold chains — get on the path that led him to where he is now? Jean Guerrero’s new book Hatemonger: Stephen Miller, Donald Trump, and the White Nationalist Agenda follows Miller through a conservative media landscape where key figures — including right-wing radio talk-show host Larry Elder; David Horowitz, who founded the David Horowitz Freedom Center; and former Breitbart chief Steve Bannon — propelled the rise of a man who now influences who gets to be an American. Guerrero, who is a reporter for NPR member station KPBS, says she decided to write the book because she “wanted to understand what was motivating the man who is crafting these policies whose consequences I had been covering from the busiest border crossing in the