Trump threatens tariffs on Mexico over water treaty compliance

President Trump threatens new tariffs on Mexican goods unless they comply with a long-standing water-sharing treaty.

Trump threatens tariffs on Mexico over water treaty compliance

December 9, 2025

Rachel Whitman

Trump’s Tariff Threat

President Trump has issued a warning of a potential 5% tariff on Mexican imports if the country fails to adhere to a longstanding treaty mandating shared water resources from the Colorado and Rio Grande rivers.

In a post on Truth Social, Trump stated that he anticipates Mexico to release 800,000 acre-feet of water, with at least 200,000 acre-feet due by December 31. He expressed frustration over Mexico’s lack of response and reiterated his tariff threat if the water is not released promptly.

The president emphasized that Mexico’s non-compliance is adversely affecting agriculture in Texas, stating, “Mexico continues to violate our comprehensive Water Treaty, and this violation is seriously hurting our beautiful Texas crops and livestock.”

Mexican President Claudia Sheinbaum addressed the situation during a press conference, expressing hope for an agreement following discussions between U.S. and Mexican officials scheduled for Tuesday.

The 1944 water treaty obligates Mexico to deliver 1.75 million acre-feet of water from the Rio Grande River and its tributaries in five-year cycles in exchange for Colorado River water from the U.S. (An acre-foot is approximately 326,000 gallons.) However, recent droughts have hindered Mexico’s ability to meet these obligations.

Sheinbaum noted that infrastructure limitations also pose challenges in meeting the requested water deliveries quickly. “Due to the size of the pipe, it would not be possible to deliver the amount of water requested in a very short time,” she explained.

The State Department highlighted that deficiencies in Mexico’s water deliveries have worsened water scarcity in Texas and resulted in significant crop losses for farmers.

A statement from officials indicated that both Trump and Secretary of State Marco Rubio are committed to ensuring compliance with the treaty through diplomatic means while evaluating all options available.

Trump conveyed his impatience regarding the situation: “The longer Mexico takes to release the water, the more our farmers are hurt. Mexico has an obligation to fix this now.”

This push comes as Trump seeks new trade agreements while U.S. farmers face challenges such as high equipment costs and low crop prices exacerbated by trade tensions with countries like China. Recently authorized measures include a $12 billion bailout aimed at supporting farmers through USDA programs.

If implemented, Trump’s proposed 5% tariff would add to an existing 25% tariff rate on Mexican goods entering U.S. markets; however, many products remain exempt under the USMCA agreement established during his first term.

The president views tariffs as an effective tool for negotiating international issues including compliance with treaties related to agriculture and drug trafficking concerns.

Edited by:

Rachel Whitman

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I focus on international relations, policy trends, and global conflict analysis. My goal is to offer balanced, informed perspectives that help readers understand the forces shaping global events.

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