The U.S., exercising its heavy hammer on the Swiss, set a deadline for more disclosures from 11 Swiss banks by January 30, 2011. The Swiss apparently turned over data purportedly in response to the demand, but the Swiss encrypted the data so that the U.S. is unable to use the data without the encryption key. The Swiss posture that the encryption key will not be disclosed until the IRS gives something on the unmitigated demands (probably some assurance that Swiss banks and all except the worst individual enablers won't be indicted).
The Swiss banks involved included Credit Suisse, Julius Baer and Basler Kantonalbank.
The transferred data is reported to "between 4 million and 6 million e-mails between Swiss bankers and their U.S. clients, including the names of those involved." Randall Jackson,
Swiss Banks Turn Over Encrypted Data to U.S. Officials, 2012 TNT 21-6 (2/1/12).
This new Swiss gambit of complying but not complying is apparently an attempt to show good faith on their part. I doubt that compliance without compliance will be perceived by the U.S. as any form of good faith. In truth, it appears just a way to stall the process. If the U.S. was really serious about the 1/30/12 deadline, the deadline has now been passed without any semblance of good faith compliance. The ball is in the U.S. Court. I suspect the U.S. knows how to parry that thrust and thrust back (to mix the metaphors).
Oh, we might all shrug, this is just the Swiss being the Swiss. That is the point. (In an analogous context, we might just say "Oh, with a shrug, it is just the Somali pirates being Somali pirates," but we take measures when feasible to move them into compliance or make them suffer if they do not.)