The amendment to a 1944 treaty will help Mexico catch up with its water deliveries to the U.S. and might help Rio Grande Valley farmers devastated by low rainfall.

The neighboring countries have tussled over the 1944 treaty, which was designed to allocate shared water resources. Mexico is required to send 1.75 million acre-feet of water from

So far, Mexico has delivered only about one-quarter of what it owes for the five-year period that ends in October 2025