Tex. Gov't Code § 437.251
Current with legislation from the 2023 Regular and Special Sessions signed by the Governor as of November 21, 2023.
The Texas National Guard may not exceed half of one percent of the population of the state except in case of war, insurrection, or invasion, the prevention of invasion, the suppression of riot, or the aiding of civil authorities to execute state law.
Tex. Gov't. Code § 437.251