It appears Obama's/WithHolder's defense here will be to assert political gamesmanship by Congress. That's weak and won't hold up in the end. Something afoul here. I smell it, and it wreaks of B.O. Wouldn't it be a curious thing to have a presidential candidate running for reelection whilst being impeached? Well, we live in interesting times.
http://www.washingtontimes.com/news/2012/jun/20/obama-asserts-executive-privilege-over-ff-docs/
“The assertion of executive privilege raises monumental questions,” said Sen. Chuck Grassley of Iowa, ranking Republican on the Senate Judiciary Committee who first began the Fast and Furious investigation.
“How can the president assert executive privilege if there was no White House involvement? How can the president exert executive privilege over documents he’s supposedly never seen? Is something very big being hidden to go to this extreme? The contempt citation is an important procedural mechanism in our system of checks and balances,” he said.
Watergate was already out in the public eye when Nixon ran for re-election....if I recall my history correctly, Nixon won that election.
I would start with emails from the DOJ to the kenyan's blackberry.