It's part of the US, and besides that retirees moving there would benefit from their advantageous tax status. FWIW, I'd go ASAP if there were safe English speaking communities with recreation, shopping, and cultural/entertainment options nearby.
High tax rates and excessive regulations killing jobs as manufacturing businesses close ?
You have just explained a big business opportunity for someone.
I’ve heard of Americans retiring in Mexico or Central America so their retirement money will go farther. But, they are gambling on remaining safe from social or political instability in those countries.
To achieve the same goal of stretching your money, in a tropical paradise, but a place which is still part of America, sounds like a great business to me.