>> brown: well, richard schmalbeck, do you have an answer for that or is that just how the system haslved? why is the i.r.s. the one looking at it? >> well, it is part of the internal revenue code, so they are the enforcers in chief as to 501-c-3, 501-c-4s, but they do have a joint jurisdiction with the federal election commission as to political campaign activities. >> announcer: let me stay with you on this question raised earlier about the confidentiality of 501-c-4s. what's the history behind that? that goes back to the 1950s, i understand. >> you know, the history is murky. i think it probably has to do with the fact that c-3s, the charitable-type of organization, has long wanted to protect its donor lists. a lot of donors like to make their gifts anonymously. they don't want to be approached by people just because they are known to be generous in their flp. so-- fill anthropee. c-3s have always been confidential. even political groups under 527 have been able to keep their donors confidential until 2000, and then congress changed that. and, really, there's probably not a strong