Requirements for US citizenship

In order to become a U.S. citizen, the following requirements are needed to be met by the naturalization applicants (unless they qualify for an exemption or apply based on their U.S. military service):

• Qualify the minimum required age (conventionally, at least 18)
• For a certain number of years continuously and physically live in the United States as a green card holder
• Establish residency in the state or U.S. Citizenship and Immigration Services (USCIS) typically the district where they intend to apply
• Have “good moral character”
• Must be proficient in basic spoken and written English and demonstrate knowledge of U.S. history and government
• Register for military service (if a male of a certain age) and be willing to perform civil service when required
• Swear allegiance to the United States