Earlier quoted context omitted.
Do you have a source for the claim that drug cartels "try all the banks to see which ones they can launder money through"? I don't believe that's how it works at all. If you read, for example Drug Cartels Do Not Exist by Oswaldo Zavala, you'll see that this money is fundamental to how global finance operates. Drug money provided the necessary liquidity to keep the world finance system from crashing in '08. It's the m…
Not sure what source you do expect to hear. wouldn't delve into it any further, but it is so, from firsthand source. When you move this kind of money, you don't just go to branch and ask "to speak to someone". Usually you know someone from bank who can arrange that's needed. And they know. And you know they know. And they know you know they know. So usually it's very clear. There is no ethical concerns at this money…
That's probably true as well. Someone hears someone say in bar that their controls are lax, or someone in a bank is coerced into helping a cartel etc.
And don't get me wrong - this is still Very Bad that this happened, but it happened due to control and process cock-ups, not as a conscious desire to pursue a new business opportunity.