I think that Obama gave the green light because the "President-elect" is mentioned more than a few times in the affidavit.

Let Roddy get himself in deep and then drop the brick on his head before he sullies YOUR house.

I do think that Obama's hands are as clean as my own in this. For one thing, he's too smart and savvy to get involved. That is NOT to say that some around him might have their names mentioned in court....