This is completely false, I work in banking and I remember being super excited by the FinCEN files, but it was utterly ridiculous! They pumped it up just to tell you our own compliance department was reporting a lot of things... like dudes really, yes you got a leak of the official documents we send to the frigging regulator... this is the opposite of hiding things, I could not believe it.
And of course it had no effect because all it did was hamper investigations !! Absolute trash honestly :(
The poor girl who did the "podcast" to try to explain it sounded so ignorant, I was like "this person has no idea what a financial crime is or what a bank would do to hide it". "Look HSBC reported a drug cartel used it to do that and look look they told the regulator"... huuuuh... where's the problem here ? How is HSBC robbing anyone ? Is HSBC really complicit of selling drugs here ? :D (I do accept their critic HSBC's compliance dpt was slow in implementing the regulation)