Amend CSSB 1 in ARTICLE 8 of the bill by adding the following appropriately numbered section and renumbering the subsequent sections appropriately: SECTION 8.___. This Act does not apply to: (1) a river or stream: (A) that constitutes or defines the international boundary between the United States of America and the United Mexican States; and (B) in which the water rights were not adjudicated before the effective date of this Act; (2) the waters of a river or stream described by Subdivision (1); or (3) a water improvement district that obtains all or part of its water supply under: (A) contract with the United States; or (B) the Reclamation Act (43 U.S.C. Section 371 et seq.).