E.J. Dionne on Republicans' Radical Path from Barry Goldwater to Ted Cruz

After Ted Cruz and Donald Trump won the top two spots in the Iowa Caucus, establishment Republicans are scrambling to regain footing. But in his new book, “Why the Right Went Wrong,” Washington Post columnist E.J. Dionne writes that it was the GOP itself that opened the door to extreme candidates like Trump and Cruz. For the past half century, he says, the party has pushed ideological far-right agendas to rally the party base, a strategy that has undermined Republicans in office. Forum talks with Dionne about the presidential primary and the GOP’s internal struggle that he traces back to Barry Goldwater’s 1964 presidential bid.