ALBUQUERQUE, N.M. (AP) — Experts say it is an issue illustrated by a New Mexico case involving a retired professor and a former college administrator who were accused in what police described as an extensive multistate, online prostitution ring.

Investigators alleged the men operated a website that recruited prostitutes and promoted prostitution. But the two were cleared after a judge ruled in June that state law says the website didn’t constitute a “house of prostitution.”