10 cfr 810 July 8, 2019 16 32 64 128 10 cfr 810 appendix a 10 cfr 810 compliance 10 cfr 810.8 10 cfr 810.2 10 cfr 810.3 10 cfr 810.6 10 cfr 810.12 10 cfr 810 countries 10 cfr 810.7 10 cfr part 810 appendix a 10 cfr part 810 dual citizenship