The study abroad program is open only to students who are U.S. citizens or permanent residents. Students must have a U.S. Passport to attend the program. Moldova does not require a Visa for U.S. Passport holders.
If you do not have your passport, the site to apply is:
US Passport Site
http://travel.state.gov/
Always check the official website for the U.S. State Department, travel.state.gov , for the most current passport fees. You can also begin the application process at your local Post Office.