perform a cost benefit analysis to determine whether keeping Texas & Florida in the Union is financially beneficial.

Perhaps those who want Texas & Florida to secede should learn about the maxim "Be Careful, you just might get what you wish for."
A cost benefit analysis would enable the Union to decide whether We benefit from having either of these States remain in the Union. For all the hate & ignorance that comes from both Texas & Florida, I say let's find out if they are worth keeping. I bet the tariffs and import/export fees the new Union gains from these truly foreign countries will outweigh any 'loss.' Plus, the next time there is a natural disaster in either place, they can get on their knees and pray instead of relying on our nation to rescue them.