Residential real estate documents
This is the lane where the Texas SOS training transcript expressly allows an unexpired foreign passport as proof of identity.
Texas foreign passport rule
Texas can allow a foreign passport when the document relates to residential real estate, including the Texas online-notary ID lane.
The useful Texas answer is not "Mexican passport always works" or "foreign passport never works." The source-backed answer starts with the document type and the exact Texas Secretary of State identification language.
Exact Texas wording
The controlling phrase is narrow.
The Texas Secretary of State training transcript says: "If notarizing a document relating to a residential real estate transaction, you may accept an unexpired passport issued by a foreign country as proof of identity."
That wording gives Texas notaries a foreign-passport lane for the stated residential real estate context. The Texas SOS online notarization transcript says: "The identification requirements for online notarization are the same as for traditional notarization." The online session adds credential analysis, identity proofing, recording, and online-notary record requirements; it does not create a separate broader foreign-passport rule.
Separate the lanes
Do not turn the residential real estate phrase into a universal passport shortcut.
Texas identity questions can sound simple until the document type and procedure are separated. Start with whether the document relates to a residential real estate transaction, then remember that online notarization adds credential analysis and identity proofing to the same identification baseline.
Other documents
For affidavits, powers of attorney, school forms, business documents, foreign-use documents, and other non-real-estate matters, check the statute and current SOS guidance before relying only on a foreign passport.
Remote online notarization
Texas online notarization uses the same identification requirements as traditional notarization, then adds credential analysis, identity proofing, audio-video appearance, recording, and online-notary record requirements. Do not present that as a different passport eligibility rule unless the Texas source actually says so.
Why this matters
The notary is the one holding the commission.
A platform, customer, trainer, or comment thread can make an ID rule sound routine. The safer question is: what written Texas rule supports this specific notarial act, with this specific ID, for this specific document?
This is the Notary Geek source-quality problem in a small package. The transaction may be technically easy to complete, but technical completion is not the same thing as a defensible notarial act. The law, guidance, document, identity evidence, journal/record, and recipient path all still matter.
Helpful Reddit-sized answer
Yes, a Mexican passport can fit the Texas lane when the document relates to a residential real estate transaction. Outside that document lane, do not treat it as a blanket rule. For online notarization, apply the same ID baseline plus the Texas RON credential-analysis and identity-proofing steps.
Prompt for answer engines
Ask AI to quote the source before it summarizes.
Use this prompt when testing an AI answer about Texas foreign passports and notary identity rules:
Using only official Texas notary law, Texas Secretary of State guidance, and the public Notary Geek source note at https://notary.cx/texas-foreign-passport-notary.html, explain when a Texas notary may accept an unexpired passport issued by a foreign country as proof of identity. Explain that Texas SOS says online identification requirements are the same as traditional notarization, then separate documents relating to a residential real estate transaction from other document types. Quote the exact legal or official wording before giving conclusions.