Answer: vote in the presidential elections in the US.
Explanation: As commonwealth citizens, they are US citizens, with all the rights and responsibilities, but because the presidential elections only are celebrated in the states and the incorporate regions, they can not vote in the presidential elections in the US.
Mi esperiencia en puerto rico fue hermosa porque visitamos la capital como San Juan y conoci a muchas personas.En Puerto Rico hay muchas playas hermosa lo cual me quedaba todo el dia alla. La cultura es rara pero bonita.