The government authorities will have to carefully consider whether to allow American tourists to enter and under what conditions. Look at it from their point of view: The USA has no coordinated testing or tracing system. The reporting of virus infection and exposure is voluntary, and applied inconsistently. The island does not have to resources or testing capacity to follow tourists day-to-day to test & contact trace in case of positive test. I envision the day will come when there is a vaccine available, all those who enter will be required to show proof of vaccination.