CNN Anderson Cooper 360 June 4, 2013 08:23:00
Does anybody know for sure at this point? >> reporter: the answer is no, anderson. he doesn't know yet who came up with that strategy to single out or target tea party groups for extra or inappropriate scrutiny and as you said, when you listen carefully to him, he admits that's something he believes but hasn't yet proven. democratic sources i've talked to who are involved in this investigation say they still do have other interviews to do, very important ones with irs employees, likely this week, and that's going to help get to the bottom of why this broad policy was put in place. but they and...
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