Texas Government Code - GOV'T § 2204.403. Mineral Reservation Required

(a) A grant under this subchapter must reserve to this state all minerals except rock, sand, and gravel needed by the United States in the operation or construction by the United States or its agents of any of the works described by Section 2204.401. The reservation must provide that:

(b) In a grant to the United States of fee title to the bed and banks of the Rio Grande for the relocation and rectification of the existing channel under the treaty that is to cause a portion of the channel to be in the territorial limits of the United Mexican States after its relocation and rectification, the reservation is required only for the portion of the channel that will remain in the territorial limits of the United States on completion of the relocation and rectification project.