Via Annie Snider at Politico:

The Trump administration escalated a water fight with Mexico on Thursday, saying it will cut off Colorado River water deliveries to the city of Tijuana.

In a post on X, the State Department’s Bureau of Western Hemisphere Affairs said it would deny Mexico’s request to deliver water to Tijuana through San Diego’s water system because the country has fallen behind in its water deliveries to the U.S. along a different shared waterway — the Rio Grande.

“Mexico’s continued shortfalls in its water deliveries under the 1944 water-sharing treaty are decimating American agriculture — particularly farmers in the Rio Grande valley. As a result, today for the first time, the U.S. will deny Mexico’s non-treaty request for a special delivery channel for Colorado River water to be delivered to Tijuana,” the post states.