Por lei, os cidadãos americanos estão impedidos de usar outros documentos de nacionalidade para entrar nos EUA.
Portanto, você não pode - como cidadão americano, entrar nos EUA com seu passaporte mexicano.
Aqui está a lista de documentos aceitos para entrada dos cidadãos dos EUA pelo CBP conforme listado em seu website . Se você estiver carregando algum desses itens, poderá usá-los para entrar nos EUA.
Air Travel: All U.S. citizens departing from or entering the United States from within the Western Hemisphere by air are required to present a valid passport or NEXUS card (if utilizing a NEXUS kiosk when departing from a designated Canadian airport). Merchant Mariner Document (for U.S. citizens on official maritime business.) U.S. Military identification card when traveling on official orders; Note that children are also required to present their own passport when traveling by air.
Land or Sea Travel: U.S. citizens entering the United States by land or sea are required to present a valid WHTI-compliant document, which include:
- U.S. Passports
- U.S. Passport Cards
- Enhanced Driver's Licenses
- Trusted Traveler Cards (Global Entry*, NEXUS, SENTRI, or FAST)
- Military Identification Cards (for members of the U.S. armed forces on official orders)
- U.S. Merchant Mariner Document (for U.S. citizens on official maritime business)