Citizenship of the US National State ·Tax Eligibility for some state- provided benefits (education) Eligibility for state political posts such as U.S.Senator Multiple citizenship-a citizen of another country naturalized as a U.S.citizen may retain their previous citizenship.A U.S.citizen retains U.S.citizenship when becoming the citizen of another country,should that country's laws allow it.Citizenship of the US National State Multiple citizenship - a citizen of another country naturalized as a U.S. citizen may retain their previous citizenship. A U.S. citizen retains U.S. citizenship when becoming the citizen of another country, should that country's laws allow it. • Tax • Eligibility for some state￾provided benefits (education) • Eligibility for state political posts such as U.S. Senator