thanks! i found the official report here: https://judiciary.house.gov/sites/evo-subsites/republicans-judiciary.house.gov/files/evo-media-document/How-Federal-Law-Enforcement-Commandeered-Financial-Institutions-to-Spy.pdf

none of it is confirmed as actually happening but it is certainly possible.

Do you really find it hard to believe? I for one do not. I believe the feds asked and the banks were all eager to hand over customer info. Just like the telecom companies did. As to the feds illegally searching those documents I have no doubt they did.
Just like firearm purchase records. Do YOU believe them when they say there is no searchable database?

The link shows that Bank of America provided the feds with over 200 customers that met a certain threshold. The feds did a deep dive on four out of the 200. There was never any alleged crime, meaning this was a fishing expedition, and an invasion of privacy. Republicans in Congress are now looking into at least 13 financial institutions to find out if they also colluded with the feds to share customer data.