Search for Sender of Ricin Letters Turns Up Odd Twists

Aired: 4/23/2013 | 0:09:07 | Clip
Federal investigators searched a home in Tupelo, Miss., in the hunt for who sent politicians letters tainted with ricin. Gwen Ifill talks to Kimberly Kindy of The Washington Post and Marilyn Thompson of Reuters about strange twists in the investigation, including conflict between a karate teacher and an Elvis impersonator