Puerto Rico has a long and complex history with the United States. In 1898, the island was ceded to the U.S. following the Spanish-American War. Puerto Ricans became U.S. citizens in 1917, but the island remains a U.S. territory and is not a state. This means that Puerto Ricans cannot vote in presidential elections, and they do not have representation in Congress.
There have been several referendums on whether Puerto Rico should become a state, but none have passed. In 2012, a referendum on statehood failed with 53% of the vote.
The future of Puerto Rico's political status is uncertain. Some Puerto Ricans favor statehood, while others prefer to remain a territory or become independent. The U.S. Congress ultimately has the power to determine Puerto Rico's status, but there is no clear path to statehood at this time.