+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,
Same thing with planets. Rather appropriately the now-classified-as-a-dwarf-planet named Eris (after the goddess of strife and discord) being discovered was what set the wheels in motion that led to Pluto losing it’s status as a planet.