It's not just Minnesota which is why I think it should be legalized

[theking]

..The oldest profession is going to happen one way or another so if it's legalized, it's more control and safer for the participants. Plus, it'll generated revenues for society too  :

Massage schools across the US are suspected of ties to prostitution and selling fake diplomas. Many remain open.

Massage schools across the US are suspected of ties to prostitution and selling fake diplomas. Many remain open. ... All of it added up to a “theme of prostitution and/or human trafficking,” the Minnesota Office of Higher Education wrote in a letter to the school's president.

[DuMa]

If they open up a massage parlor in vegas where prostitution is somewhat legal then yeah.

Anything else is giving the person who has a legit career in massage therapy a bad rep. 

Like abalone harvesting in California.  Before it was legal but there was a spike in poaching which could be a reason why their population are dwindling and it is now and has been banned for harvesting for like 2 years and counting now?  This in turns pisses off the folks who does it legal and with demand comes price jacking up if I wanna eat this critter at a Chinese restaurant where they have to import it from overseas and from another source.   Domino effect and the good people also getting fawked out of the whole ordeal.