Alexander brothers sentenced to 30 years in prison (youtube.com)
US law. No actual ‘sex trafficing' involved in this case, though, as it would mean anything to any person. In this case it was just actions that currently accord with the current legal definition, such as ‘enticing’ someone to come visit you in another state. Because they had things to enjoy (expensive and vacation stuff) this is ‘enticing' in current US law. Somehow it also triggers ‘fraud’ because there was ‘false pretences’ involved.
The drugs involved are cocaine, GHB, and alcohol. They gave these to the women. If they slpped GHB to women unbeknownst (and they at no point admitted to slipping drugs unbeknownst to the women), this is a crime of the highest seriousness, especially if taken advantage of.
However, on the other side of this, the act they performed was sexual, and the women would not have travelled that far except with the expectation that such a thing was the likely outcome or reason. The drugs they said they were slipped would have been in addition to the drugs they voluntarily took, in a social context. If they were shown nice things to come and enjoy, the reason they went was to enjoy those things, it could be said.
Has lying or stretching the truth become criminal in the US now? It never was before, except in cases of actual fraud, in which the lie itself is not criminal.
The most serious part of the accusation is the number of women over the period of time (high school to recent, all testifyng they had been drugged and taken advantage of). None of them have provided proof, but the number of instances should have some weight. The best evidence available perhaps would be to know these women and to know if they're standup people or not. However, if there are multiple women and they each thought they had been drugged, why did none report or get a tox report the next day?