Conch Republic

The Conch Republic is a micronation declared as a tongue-in-cheek secession of the city of Key West, Florida, from the United States on April 23, 1982. It has been maintained as a tourism booster for the city. Since then, the term "Conch Republic" has been expanded to refer to "all of the Florida Keys, or, that geographic apportionment of land that falls within the legally defined boundaries of Monroe County, Florida, northward to 'Skeeter's Last Chance Saloon' in Florida City, Dade County, Florida, with Key West as the nation's capital and all territories north of Key West being referred to as 'The Northern Territories'".
While the protests that sparked the creation of the Conch Republic have been described by some as "tongue-in-cheek," they were motivated by frustrations over genuine concerns. The original protest event was motivated by a U.S. Border Patrol roadblock and checkpoint that greatly inconvenienced residents and tourists.

Wikipedia