The US colony of Puerto Rico has had multiple votes on statehood. The most recent were in 2012 and 2017. The majority voted for statehood in both of those referendums. There has been support for statehood for Puerto Rico from both parties over decades. The population of Puerto Rico is over three million people and larger than that of 21 states.
The Democratic platform of 1940 said: "We favor a larger measure of self-government leading to statehood, for Alaska, Hawaii and Puerto Rico. We favor the appointment of residents to office, and equal treatment of the citizens of each of these three territories."
President Gerald Ford proposed statehood in 1976: "I believe that the appropriate status for Puerto Rico is statehood. I propose, therefore, that the people of Puerto Rico and the Congress of the United States begin now to take those steps which will result in statehood for Puerto Rico. I will recommend to the 95th Congress the enactment of legislation providing for the admission of Puerto Rico as a State of the Union."
President Ronald Reagan favored statehood: "I favor statehood for Puerto Rico and if the people of Puerto Rico vote for statehood in their coming referendum I would, as President, initiate the enabling legislation to make this a reality."
President George H. W. Bush raised the issue of statehood before Congress in his first State of the Union message in 1989: "There's another issue that I’ve decided to mention here tonight. I’ve long believed that the people of Puerto Rico should have the right to determine their own political future. Personally, I strongly favor statehood. But I urge the Congress to take the necessary steps to allow the people to decide in a referendum."
https://en.wikipedia.org/wiki/Statehood_movement_in_Puerto_RicoIt's well past the time for the United States to get out of the business of being a colonial power. The citizenship, governing, and voting rights of the various citizens in the remaining island colonies is a mess of inconsistencies. It's absurd.