Texas constitution
Article 1: bill of rights
Section 17

(d) When a person's property is taken under Subsection (a) of this section, except for the use of the State, compensation as described by Subsection (a) shall be first made, or secured by a deposit of money; and no irrevocable or uncontrollable grant of special privileges or immunities shall be made; but all privileges and franchises granted by the Legislature, or created under its authority, shall be subject to the control thereof.