Become a citizen. To be able to live outside of the U.S. and not lose your citizenship. To be able to run for public office. U.S. citizens never have to renew their certificates of naturalization. To protect yourself from changes that target non-citizens.
Government policy is based on whether individuals are citizens or non-citizens.
Eligibility Be at least 18 years old. Have been a lawful permanent resident of the United States for 5 years, or 3 years if married to a person who has been a U.S. citizen for at least 3 years. Not have abandoned residency in the U.S. Be willing to swear loyalty to the U.S. Have good moral character. When notified by the INS, get fingerprints taken. Study English and U.S. history and government.