Trade talks between US and Mexico: Time to clean up the Tijuana River mess

< The Toxic Trade-Off: How US-Mexico Deals Are Poisoning the Border >

The River That Flows in Reverse

For decades, the Tijuana River has served as a grotesque conveyor belt, ferrying raw sewage, industrial runoff, and chemical waste from Mexico directly into U.S. waters. The result? Beaches from Imperial Beach to Coronado—once prized for their golden sands and surf—are now no-go zones, their waters too toxic for swimming, fishing, or even wading. This isn’t just an environmental crisis; it’s a public health emergency unfolding in plain sight.

Yet while the river chokes on pollution, another story has dominated headlines: the explosive growth of U.S.-Mexico trade. Deals like NAFTA and its successor, USMCA, have turned the border into an economic powerhouse—one where factories hum 24/7 and goods crisscross the frontier at record speeds. But here’s the bitter irony: the same trade that fattens wallets is bankrupting the communities caught in its wake.

The Human Cost of Dirty Deals

The damage isn’t just ecological—it’s personal.

• Schools near the border report asthma rates soaring, where children choke on air thick with industrial fumes and untreated sewage.
• Military operations grind to a halt when toxic plumes drift over bases like Camp Pendleton, forcing drills to pause and soldiers to seek medical care.
• Border agents stationed in the river valley battle mysterious illnesses, their health collateral damage in a trade war they never signed up for.

These aren’t isolated incidents. They’re symptoms of a broken system—one where economic gains are measured in dollars, while the costs are measured in sick kids, closed beaches, and dying fisheries.

Beyond GDP: What’s the Real Cost of Trade?

The question isn’t just whether USMCA can be fixed—it’s whether trade deals should even be measured by GDP alone. When beaches shut down for months, tourism withers. When kids miss school because of asthma attacks, productivity crumbles. When fisheries collapse, entire industries vanish.

These aren’t abstract environmental concerns—they’re economic crises in disguise. If USMCA gets renewed without addressing the river, it sends a damning message: trade wins, health and nature lose. And that’s a deal even economists should think twice about signing.