Arrested in FL for drug possession, what will happen after person is out of county jail ?

You will likely be taken into immigration custody after release from criminal custody at which time removal proceedings will be initiated against you. If you do not challenge your removal, you will be ordered removed promptly and then efforts will be made to effectuate the order. You will likely be subject to a permanent bar to admission based upon your conviction. You can read more about criminal aliens at http://myattorneyusa.com/criminal-aliens.