22 U.S.C. § 277d: American-Mexican Boundary Treaty, authorization for carrying out treaty provisions; investigations; land acquisition, purposes; damages, repair or compensation

the demarcation, mapping, monumentation, channel relocation, rectification, improvement, stabilization, and other matters relating to the preservation of the river boundaries between the United States and Mexico; the establishment and delimitation of the maritime boundaries in the Gulf of Mexico and in the Pacific Ocean; water resources; and the sanitation and the prevention of pollution; for transfer to Mexico as provided in the treaty; for construction of that portion of new river channels and the adjoining levees in the territory of the United States; to preserve the Rio Grande and the Colorado River as the boundary by preventing the construction of works which may cause deflection or obstruction of the normal flow of the rivers or of their floodflows; and for relocation of any structure or facility, public or private, the relocation of which, in the judgment of the Commissioner, is necessitated by the project; and to remove, modify, or repair the damages caused to Mexico by works constructed in the United States which the International Boundary and Water Commission, United States and Mexico, as determined have an adverse effect on Mexico, or to compensate Mexico for such damages.