Texas Government Code - GOV'T § 405.019. List of States Requiring an Official Seal for Certain Documents

(a) The secretary of state annually shall compile a list of those states or territories within the United States that require a notary public to validate a certificate of an acknowledgement, proof of a written instrument, or a jurat by attaching an official seal.

(b) The secretary of state shall make the list available to the county clerks of this state before January 1 of each year.

(c) The secretary of state shall amend the list and make the amended list available to the county clerks of this state if the secretary learns that a state or territory has changed its requirements relating to a notary public in a manner that requires it to be added to or deleted from the list.