https://www.desmoinesregister.com/st...nts/100344044/
https://www.kcci.com/article/massage...-sting/6492749
https://www.desmoinesregister.com/st...iowa/93291274/
Except for one, the arrests were for not having a massage license. In the Register article the police admit they can't find any evidence of prostitution. They think the girls have a "sixth sense" about undercover officers, when the truth is, most of them don't engage in prostitution, as many of us have discovered. They theorize that the men who own the businesses are human trafficking the women who work there, but the official management position of all these businesses is no prostitution. It is the individual worker who makes the decision to take that risk for herself.
Also noted in the Register article, the woman didn't show up for her court date. That's because the minute they are released they go to another city and take a different name. So other than inconveniencing them, the county will never see the fine money.
Human trafficking at Asian massage parlors is a myth, an urban legend.