WASHINGTON – U.S. Senator John Cornyn (R-TX) today celebrated the inclusion of his provisions on the 1944 Water Treaty in the Senate Interior, Environment, and Related Agencies Appropriations Bill for Fiscal Year 2026 to reestablish the North American Development Bank (NADBank)’s Water Infrastructure Fund and require a report on improving water storage and systems:

“The South Texas agriculture community has suffered due to Mexico’s refusal to comply with the Water Treaty, and they deserve relief and solutions,” said Sen. Cornyn. “My provisions to reestablish NADBank’s Water Infrastructure Fund and require a water systems report are an important step in the right direction to make Texas whole, and I’m grateful to the committee for including this critical language in the appropriations bill.”

Background:

Sen. Cornyn has led the charge in Congress to boost Texas’ water supply and ensure Mexico fulfills its treaty obligations to provide annual deliveries of water to South Texas farmers and ranchers. In addition to successfully securing more than $280 million in emergency assistance for Rio Grande Valley farmers and producers affected by the water shortage, he led a request earlier this year to U.S. Secretary of State Marco Rubio asking for renewed efforts to push Mexico to comply with the 1944 Water Treaty while also securing Secretary Rubio’s commitment to hold Mexico accountable for delays.

Last year, Sen. Cornyn sent a letter to NADBank urging for the restoration of their Water Infrastructure Fund, raised alarms after a Rio Grande sugarcane mill closed due to acute water shortages, cosponsored a resolution supporting diplomacy, and sent a letter to then-U.S. Secretary of State Blinken urging the Department to engage on Mexico’s violation of the intent of the treaty. Senator Cornyn also led a letter to the Chairmen and Ranking Members of the House and Senate Appropriations Subcommittees on State and Foreign Operations urging them to withhold designated funds from Mexico until they enter into an agreement with the U.S. to balance the deficit of the water deliveries, which the House Appropriations Committee included in their funding bill.

Under the Treaty Relating to the Utilization of Waters of the Colorado and Tijuana Rivers and of the Rio Grande, Mexico is obligated to deliver an average of 350,000 acre-feet of water annually over a five-year cycle as its contribution to the Rio Grande’s water supply. However, Mexico has consistently delayed fulfilling its water obligation until the end of the five-year cycle, which hinders South Texas farmers’ ability to plan for and grow crops as well as ranchers’ ability to provide water to livestock. The current cycle ends in October and so far, Mexico has paid less than 700,000 acre-feet of water — less than half of what it owes, according to IBWC data.