One thing I know is that as a Puerto Rican resident a person does not lose their US citizenship. A person does not have to pay US federal income tax and cannot vote in US elections. As I am moving to Puerto Rico full time next month I am considering becoming a resident as I will be moving my online business there too. I am not sure if there are any differences in operating a business in PR versus in the US. I think medicare pays less and what effects might take place with a Republican administration. Has anyone else have any insights?