How do you check if someone is a US citizen?

How do you check if someone is a US citizen?

You are a U.S. citizen if you have a: Birth certificate showing birth in the United States; Form N-550, Certificate of Naturalization; Form N-560, Certificate of Citizenship; Form FS-240, Report of Birth Abroad of United States Citizen; or. Valid unexpired U.S. passport. Jul 10, 2020

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