Come to think of it...
The news has said that the FBI has traced his phone call as in catching him red handed for mentioning about selling Obama's old senate seat to someone else and he said he has been the victim of political vedetta...
with the techology today, it is only sightly POSSIBLE that they could scramble your voice as a way to mix it up and making it sound like you said it but you really didnt, you know?
As for example, you would say: Mr. Smith said I have to cut out an article that relates to the Iraqi War for class torromow but eh the scissors are dull and it is hard to cut thru.
If you said that to the person thru the phone and the person then trace your voice to the machine, and the person would scrabble your voice and make it up like this: I cut class torromow. Mr. Smith is dull.
It's possible so...perhas he's not COMPLETELY innocent when there's not enough proof expect just a recorder?
*shrugs* who knows.