Puerto Ricans have been US citizens since 1917, when the United States Congress passed the Jones Act, it is subject to the full power of the US Congress through the Territorial Clause. This means that the power to exercise its sovereignty rests with the United States Congress and the powers existing on the island. Everything related to currency, defense, foreign relations and trade between states fall under the jurisdiction of the Federal Government from United States.
Puerto Ricans are citizens of the United States with all the rights and duties conferred by that citizenship.
It is legally a bilingual territory, in the sense that both Spanish and English are official languages.