We're going to follow the money now with our regular Friday political commentators, E.J. Dionne of The Washington Post and David Brooks of the New York Times. Welcome back to you both.
DAVID BROOKS: Good to be here.
E.J. DIONNE: Good to be with you.
BLOCK: And I want to start with a hypothetical question. What would this primary contest, do you think, have looked like without superPACs and without the Supreme Court's Citizens United decision? David Brooks, a very different race?
The public radio show THIS AMERICAN LIFE has retracted a lengthy story it ran in January. The report painted an ugly picture of working conditions at Chinese factories where they manufacture iPhones and iPads. The story focused on a monologue told by performer and activist Mike Daisey about his interviews with factory workers. NPR's media correspondent David Folkenflik joins me now. And, David, this was THIS AMERICAN LIFE's most popular podcast. How are they explaining their decision to retract the story?