Audio: Jane Mayer explains how the conservative activist James O’Keefe foiled his own mission.

On March 16th, a man who said his name was Victor left a voice message at the offices of the Open Society Foundations, which are funded by George Soros, saying that he was a potential donor. Then, he forgot to hang up the phone, and the machine recorded “Victor” and his staff describing what sounded like an entrapment scheme. This week, James O'Keefe, the conservative activist who has used undercover videos to try to embarrass Planned Parenthood, NPR, and ACORN, admitted that he was the caller and apologized to his supporters for the failed operation. On “The New Yorker Radio Hour,” the staff writer Jane Mayer goes through the voice-mail recording to see what it tells us about O'Keefe's methods and the scope of his ambitions.