Ace of Spades Headlines

Jim Lindgren at the Volokh Conspiracy Actually Bothers Asking Rainbow/PUSH for a Recording of Michelle Obama's Alleged Speech There; Guy Says He's the First Person Who's Asked About It
Lindgren takes this as meaning it's unlikely the tape exists, which I don't (I think the story is nonsense, but not for this reason), but I am curious: What the fuck is the MSM doing not even taking this rather obvious step of asking Rainbow/PUSH for the goddamn tape?