If they legalized it and regulated the hobby it would be much easier to catch under age and forced cases the legit willing and of age sex workers would leave the shadows. This would shrink the pool of people to sort though making it easier for LE to spot. As long as their is sick losers willing to pay someone will attempt to provide, so it will never completely go away. But I think legalizing sex work would reduce the problem. The pimps used fear of LE to help control both ladies I know. At least that would end.