From Mitt Romney (believe it or not):
"Since the president has been president, the cost of gasoline has doubled. Not exactly what he might have hoped for. … He’s said it’s not my fault. By the way, we’ve gone from ‘Yes, we can’ to ‘It’s not my fault.’ Well, this is in fact his fault.”
It's Obama's fault for no other reason than the fact that he's gotten his wish.