A president presides over something. To preside over it, however, he must know something about it. But 'President' Obama seems to know little or nothing about what is going on in his government. He puts me in mind of Sgt. Schulz of Hogan's Heroes: "I know nothing!" Check out this clip.
This cute comparison occurred to me this morning, but I now see that it has occurred to others too.
The despicably mendacious Eric Holder is another Sgt. Schulz.
Ich habe nichts gewusst!