We know exactly how it is done.  We know that it is illegal.  We know that it is institutionalized and involves the government.  Beside the illegal trafficking and the hardships that the trafficked individual must endure we have a situation that is ripe for corruption.  Corrupting the CPB/ICE officer, paying harbor official to allow trafficked people to live on vessels that they cannot step foot off of, political contributions, clerks and bureaucrats that issue permits, harbor police, NOAA inspectors.  All these people that work for the government are put in a place where they are subject to corrupting influences. These state federal regulator or law enforcement personnel are put in these situations by the industry's greed.  When a gang of criminal do illegal things (smuggling dope or guns) we call that organized crime, they are criminal.  When the government or its employees are involved we call it "corruption". Entirely different matter. One that eats at away at our democracy.