Who says that it hasn't already?
Didn’t they just bust a ring of Somali pimps selling underage girls in the midwest not long ago? yeah, I would say it is already here.
It has already happened here. Remember that beautiful thirteen year old American girl who was about to be sent to Pakistan by her Muslim stepfather? Fortunately the girl’s uncle found out about this and hid the girl from the stepfather. If the uncle hadn’t intervened she would probably be in Pakistan right now living a horrible life.