No person can be convicted of treason except upon the testimony of at least two witnesses to the same overt act, or upon his own confession in open court.
Tex. Code Crim. Proc. art. 38.15
TWO WITNESSES IN TREASON
Acts 1965, 59th Leg., vol. 2, p. 317, ch. 722.
Official source: Texas Constitution and Statutes. Reproduced from public-domain Texas statutes; confirm against the official source for the current text. Not legal advice.