National security -- 5 Emigration and immigration 4 Government publications -- 4 Security clearances -- 4 Territorial waters -- 4 Immigrants -- 3 Internal security -- 3 more ... Government policy -- 2 Law and legislation -- 2 Alien labor, Indonesia -- 1 Chinese Americans 1 Emigration and immigration -- 1 Hakka (Chinese people) -- 1 Illegal immigrant -- 1 Immigration -- 1 International security -- 1 Migration, Internal -- 1 Passports -- 1 Public safety -- 1 Social life and customs 1 less ...