AHC: New Orleans City State

With a POD no earlier than the 30 Years War, have New Orleans be a free city politically independent of the US or any other North American country. The rest of the Louisiana territory can go, but New Orleans has to remain independent.

As an alternative, if you don't think you can do that, have New Orleans be a City State in the sense that the city is its own state in the USA seperate from the rest of Louisiana.
 
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