1 Texas Administrative Code § 81.8 – Documentation Establishing Citizenship

(a) “Proof of citizenship” may take the form of a certified copy of the voter’s passport, birth certificate, or certificate of naturalization papers.

(b) If a voter fails to provide proof of citizenship within the required 30 days, the voter registrar shall promptly send the voter a notice of cancellation that includes the date of and the reason for cancellation.