This is more a legal question than anything else, but it is very related to religion as well.

Sometimes I have ideas, and plans, when I make my millions what will I do with those millions? One idea of mine is to open a temple. I practice a form of sumerian religion, this is a very old religion from the beginning of recorded time, this also makes me a polytheist (NOT a pantheist!) and I have a pact of sorts with three deities in particular, Enki, Inanna, and Ninmah.

I also celebrate Ninkasi, the goddess of beer, when I am brewing homemade beer and/or hard cider, but this is mostly for fun

The ancient sumerian temples, particularly and especially the temple(s) of Inanna and her cultists practiced temple prostitution.

The issue is that prostitution is illegal in most jurisdictions in the united states, the law that conflicts with anti-prostitution laws in this case is the first amendment, freedom of religion, in this case freedom of religion is the freedom of members of this temple to participate in temple prostitution, so who thinks we'd get away with it? If/when the legal battle comes about which way will the verdict go? Would it go as high as the supreme court?

It's a risk.
The First Ammendment covers freedom of belief and expression of that belief, but not always action.
Look at the Fundy Mormons right now. You don't get away with statuatory rape for faith.
On the other hand some Native tribes get rights to use certain drugs in rituals that would normally be illegal.

I think it depends on whether the crime is seen as harmless or not. And it depends on how the SCOTUS feels (I don't think it's so easy to rely even on liberal-conservative divisions for this... it's up in the air).

I'd suggest just starting the temple in Nevada. It would be easier.

__________________
"Man lives in the sunlit world of that which he believes to be reality. But unseen by most is an underworld, a place that is just as real... but not as brightly lit... A DARK SIDE!"
-opening from Tales From the Darkside

You need to look at the particular statutes. They're very different and some can be quite confusing and frankly archaic. State law refers. You need to o consult a lawyer because it's entirely probable that an appeal to the constitution will fail. If that worked then the mob would have figured it out years ago.

Now that's my kind of deity!

__________________
There shall ye find Light

Be thou faithful unto Death
And I will give thee a crown of Life

I have neither the time nor the inclination to explain myself to a man who rises and sleeps under the blanket of the very freedom that I provide and then questions the manner in which I provide it.

Oh cruel fate, to be thusly boned. Ask not for whom the bone bones. It bones for thee.

Just set your religion up in such a way that your worshippers don't have to pay for sex with the goddess. Then, it wouldn't be prostitution.

__________________
Theodore Lamar Heiks
BA, History/Political Science, Western State College of Colorado, 1984
MBA, Entrepreneurship/Marketing, City University of Seattle, 1993

I dont believe in paying for luv...anyways...

man...someone green rep me...

I actually think that could work as long as it's totally clean and harmless and involves no children. I agree with Java, Nevada would be easiest.

__________________
Somewhere, something incredible is waiting to be known.
-Dr. Carl Sagan

The members of this faith would pay for sex with other members or the girls would be outside of the faith?

I can't see paying for sex anyway. I just think that prostitution should be legal. I don't think government should regulate this type of entertainment.

__________________
Acceptance is the answer

"Im a Tarte, what! you want some of this?"

The prostitutes would be the priestesses of this religion.

__________________
Theodore Lamar Heiks
BA, History/Political Science, Western State College of Colorado, 1984
MBA, Entrepreneurship/Marketing, City University of Seattle, 1993

This one is actually pretty simple. According to the law your religious practices cannot violate the law of the land so for instance if it required animal sacrifice you can't do it. Same would apply to prostitution.