So much for all that oversight then...
Hayden has mades a mockery of the oversight by going on the record with "I would not have thought twice, I would not have asked permission".
He's talking about hacking records in China so there's a chance the oversight bods won't give a toss, but the flip side of the coin is that the superpowers have declared that such activities are an act of war. I find it disturbing that the leaders of a world superpower lack the authority to deter heads of intelligence agencies committing acts of war simply because they can.
Fair play to the man for laying his cards on the table though.