We need to travel to Cambodia sometime in Jan 2023. My wife green card has expired and we already reapplied for the extension. We also thinking to apply for Travel Document (green passport) but don't know for sure if we need to have our Cambodian passport to go along with it ? I believed that the U.S travel document is for Re-entry into U.S but not work as a U.S passport to go to other country. Can someone verify? Thanks