When Israel needs the support of the US after blowing up Iran's Nuke program the Mossad will tell Obama that they are holding ALL of his PAPERS and send copies to the White House to prove their claim.
Obama will give Israel whatever they demand to keep the story bottled up but Israel will leak the story before the 2012 elections. If Obama trys to twist Israel's arm they will release the information in Sept. of this year!
I have been thinking about this. I was thinking a disgruntled Cia agent might leak it. Or KGB holding it over him. Or maybe even SOROS.