People who are not U.S. citizens require specific approval from the United States Department of Energy (DOE) to visit U.S. DOE facilities. Furthermore, the U.S. DOE maintains a list of sensitive countries whose citizens require further checks prior to physically accessing the DIII-D National Fusion Facility. In order to comply with U.S. DOE policy, DIII-D requires an extended lead time to arrange visits to the facility by any person who is a citizen of a sensitive country. Please note that while the list of sensitive countries is provided below, this list is subject to change without notice.