Then you remember wrong, AA got taken apart for other issues. They had a pretty solid defense that the company cheated and that sometimes cheating cannot be detected. You can only protect up to a certain degree against criminals. No moral code, no product control or compliance will prevent criminals from doing what they are doing. So, stop suggesting ECB or EU had much knowledge to what degree they were cheated and lied about. Sure, in retrospect they should have triple and quadruple checked but don't suggest they knew and still signed the pact, makes very little to no sense.
Enron wasn't being accepted into a monetary union. It's a bit different. And Arthur Anderson, if memory recalls, took quite a hit for that screw up.
Who got hit for the Greek lies?