If Puerto Rico were to become a independent nation, I would have trouble seeing them being "charged" for land prior to their departure. So why would Louisiana?
The Federated States of Micronesia were not (apparently) charged anything stemming from their departure.
Puerto Rico would have never been a state, much like Micronesia, which was only administered by the US for two years after WWII...like Germany or Japan.
The Federal government bought all of Louisiana from the French Empire in 1803 (Louisiana Purchase, look it up). The Federal government was then positioned by the residents of the Louisiana Territory to become a state.
The one example you just gave were of lands that were "won" in battle and the other was as apt as comparing it to Berlin.
Stop making stupid comparisons. Every one of these comparisons you've posted has been more stupid than the last.
The United States is NEVER going to allow any state to secede. End of story.