Money Laundering and AML Compliance
It is expensive to keep a crime and corruption department on your banking institution. If you are dealing with a millionaire who is related to some oil mogul in Russia you can do your due diligence and Vladimirovich can hire a team of accountants to prove that his business is legit and not at all related to the corporativist oligarchy his uncle runs. Or it might be, but the risk vs reward is good enough to turn a blind eye for now.<p>Ivan, immigrant from Belarus who drives a bus and likes to withdraw cash from his &lt;5000 euro account? Get this living liability out of my bank! I won&#x27;t run a whole department or risk getting fined because some no name pauper. But since we can&#x27;t just ban him let&#x27;s just ask for ridiculous documents like proving the nationality of his grandfather (real story btw) or criminal records, translated in English,  by an official translator. Let&#x27;s annoy him so much with retarded requirements he will leave by himself and if he fails to provide our totally not arbitrary evidence we write a polite e-mail stating that we are sorry but we won&#x27;t run his account anymore.<p>That&#x27;s basically AML compliance to you.