Have you seen any of the LEO intel reports saying that the characteristics and foot soldiers of the drug trade are being shifted to the Slave Trade?
So far it is less risky (regarding legal consequences) to deal in illicit human cargo than it is to deal drugs, and easily as lucrative. Crooks can be dumb, but not blind.
Watch, a "War on Slavery" will get started that'll be just as effective as the "War on Drugs" has been. Bigger Government, more bureaucracies and not much actually accomplished.