Due to federal restrictions contained in the current National Defense Authorization Act, citizens of the People's Republic of China-including the special administrative regions of Hong Kong and Macau-as well as citizens of the Islamic Republic of Iran, the Democratic People's Republic of Korea (North Korea), and the Russian Federation, who are not Lawful Permanent Residents ("green card" holders) are prohibited from accessing facilities that support the mission, functions, and operations of national security laboratories and nuclear weapons production facilities, which includes Los Alamos National Laboratory. The PSSE supports the SNDD Program Manager and is a member of the SNDD program leadership team that plans, tracks, manages, and reports on the SNDD portfolio to the NNSA sponsor, the LANL Nuclear Nonproliferation and Security (NNS) program office, and LANL's Intelligence & Space Research (ISR) division, which executes the majority of SNDD work at Los Alamos.