What happens if I lose my passport or it expires while I'm traveling abroad?
If you lose your passport while travelling, what you need to do is go to the US embassy or consular office, because you will not be able to leave the country or enter the US without a valid passport. Also, if your passport expires while you're travelling, you will have to do the same because you need a valid passport to leave any country and to re-enter the US. If you are travelling to a country without a US embassy, most likely there will be a US consular. However, if there isn't one you need to call the State Department in Washington, DC, to figure out how you can renew your passport.