This bill requires the Secretary of State to submit annual reports to Congress regarding Mexico's water deliveries to the United States pursuant to a 1944 treaty. These reports must determine if Mexico delivered at least 350,000 acre-feet of water in the preceding year, assess its capability to meet the 1,750,000 acre-feet target over a five-year cycle, and identify Mexican economic sectors reliant on water from the United States or specific Rio Grande tributaries. Should the report indicate that Mexico failed to deliver the minimum annual water volume, the President is mandated to deny all non-Treaty requests for special water delivery channels from Mexico. Furthermore, the President gains the discretion to limit or terminate engagement with the identified Mexican economic sectors, though engagement related to countering the flow of fentanyl and other synthetic drugs remains exempt. An exception allows for fulfilling non-Treaty requests if certified as vital to U.S. national interests and exclusively for ecological, environmental, or humanitarian emergencies, not for municipal or industrial uses.