i know when i was living just outside of dc one of the state's attorneys explained that almost all of the prostitutes in/around dc who tend to the politicians (and especially to the ambassadors, embassy people, etc) are part of one of several big sex trafficking rings that are headquartered in new york and send girls out to important people up and down the coast. at one point an african guy tried starting up a ring out of maryland, with a bunch of girls he helped immigrate to the us (and then put into sex slavery of course). the news officially said this was found out and canned because 0 tolerance. the state's attorney said this was canned because he started cutting too much into the profit margins of one of the new york rings, since late teen, and early 20 something french speaking african girls was a niche that wasn't being catered to apparently. another ring was busted a few years before that for similar reasons, but i don't know the details of that one because i only read about it, while the african guy i knew about because a coworker was losing his shit about how that african was his brother's little league soccer coach.
Germany