Turks and Caicos are actually a British Overseas Territory. But do you need a US passport to get there?
You will need a valid passport from your country of citizenship, as well as a return ticket. Turks and Caicos is a popular vacation spot for Americans, so there's no need to worry about not being able to understand the locals - English is the official language of Turks and Caicos.
US citizens need a valid passport to enter Turks and Caicos, so if you're planning a trip, make sure to get your affairs in order first.
So before you start packing your bags, be sure to apply for a passport - otherwise, you may find yourself stuck at the airport. Safe travels!