hello, i was born in london (united kingdom) but since my dad is american i obtained US passport and citizenship and renewed my passport a while ago, and my mom is kenyan so i also have a kenyan passport and citizenship. as a child i lived,studied and am still in kenya for over 20 years , and usually travel with my kenyan passport. i want to start travelling outside kenya to study with my US passport because its less of a hustle at immigration for being african. however i have not registered at the US embassy as a dual citizen. do i need to register/convert and am i at risk of loosing nationality? thanks