+5 Yes, Puerto Rico is widely considered a colony—or often described as the world’s oldest colony—due to its status as an unincorporated U.S. territory. While residents are U.S. citizens, they lack voting representation in Congress, cannot vote for president,

Every ~4 years. Latest vote was taken in 2024, and they voted to become a state. It’s been like this for four consecutive plebiscites, but even before, it was kind of a popular option.
I remember one in the 00s where they said no anyway, don’t recall an exact frame of reference for the year.