Actually, developed countries where prostitution is illegal never jail prostitutes themselves, but only those who profit from it and coerce others into it. The fear of being arrested is rarely there. But the fear to get deported back to their country is there, whether prostitution is legal or not.
In a state where prostitution is legal, like Nevada, an exploited illegal who would come to report to the authorities would get a thank you, then would be deported in the same beat.
Legalization is hypocritical. It never stopped the illegal parts. It just allows the "authorities" to have their share of the cake.
I wasn't talking about illegals. That's an entirely separate problem. If they weren't being exploited sexually, they'd be exploited another way. That's a problem with human beings and greed. Legalization is in no way hypocritical. It allows people to do what they would do anyway without wasting law enforcement resources on problems that shouldn't even exist. Regulation allows taxation, which funds public services, as I'm sure you know. You think pimps are paying taxes on illegal prostitution? Gimme a fucking break. Will legalization stop illegal prostitution? Of course not. But it will give a better option to people.