Mexico’s Maya Train: A Collision of Development, Environment, and Eroding Justice

YUCATÁN PENINSULA, MEXICO – What began as a presidential promise of no felled trees has spiraled into a contentious saga of ecological destruction, legal battles, and a profound redefinition of environmental justice in Mexico. The 1,554 km Maya Train project, launched in December 2018 under President Andrés Manuel López Obrador, has become a stark illustration of the tension between ambitious infrastructure development and the preservation of critical ecosystems and democratic norms.

Initially, President López Obrador declared, “Not a single tree will be felled.” Yet, eight years into the project, at least 3.4 million trees have been destroyed, with some environmental groups estimating the figure closer to 10 million. The ecological fallout extends beyond deforestation; pillars driven into the Yucatán Peninsula’s fragile limestone have contaminated parts of the vital Great Mayan Aquifer, transforming ecosystems that many scientists warn are beyond restoration.

Legal Battles and Governmental Bypass

In response to the escalating environmental damage, a coalition of community groups, environmental organizations, and legal experts initiated at least 25 major legal challenges and amparos, Mexico’s unique constitutional protection mechanism, seeking to halt construction. Despite judges repeatedly issuing definitive suspensions, the federal government continued building, effectively bypassing or legally outmaneuvering judicial rulings. This defiance has been accompanied by an alarming increase in violence against environmental defenders, with at least 25 murdered in 2024 and 236 documented attacks, including intimidation, harassment, criminalization, and defamation.

The Maya Train project has emerged as a crucial test of environmental justice in Mexico, exposing both the potential and the limitations of the nation’s constitutional protections. However, as communities grew adept at leveraging these safeguards, the legal landscape itself began to shift. Through a series of judicial reforms and amendments to the Amparo Law, the balance of justice, according to interviewed experts, has decisively tipped in favor of the state and corporations undertaking strategic infrastructure projects.

This report draws on insights from 21 environmental lawyers, constitutional scholars, scientists, community leaders, and Maya activists, complemented by on-the-ground reporting from the Yucatán Peninsula. It explores the implications when environmental justice is systematically weakened through the erosion of democratic norms like accountability, and how communities are responding.

Weakening the Amparo Law

Central to the communities’ legal strategy was the amparo, a powerful constitutional safeguard that historically allowed judges to suspend projects before irreversible environmental damage occurred. Following constitutional reforms in 2011, communities no longer needed land ownership to defend it; demonstrating that environmental harm threatened the collective good was sufficient to establish legitimate interest. This legal framework underwent significant change in 2024.

Judicial reforms introduced by the López Obrador government altered how judges are selected, shifting from merit-based appointments to popular elections. Concurrently, amendments to the Amparo Law narrowed the scope of who could file constitutional challenges and complicated preventive environmental protection. Lawyers interviewed consistently highlighted three key concerns:

• Limited Scope: Amparos increasingly protect only the individual filers, rather than the entire affected communities.
• Higher Bar for Harm: Communities must now demonstrate more direct and immediate harm, making proactive intervention against environmental damage significantly more difficult.
• Judicial Discretion: Judges now possess broader powers to dismiss cases early and greater leeway to prioritize projects deemed in the public interest.

Environmental lawyer Carla Aceves cautioned that these changes undermine the preventive spirit of environmental law, stating that “by the time the damage can be conclusively demonstrated, it is already irreversible.” Raúl Aldama Gavilán, an environmental and administrative lawyer specializing in mega-project litigation, argued that these reforms effectively shifted power away from one of the few institutions capable of acting as a constitutional counterweight to the executive branch.

New Directives for Environmental Reporting

The 21 experts interviewed stressed a consistent message for journalists: environmental conflicts are not merely about nature; they are fundamentally about power – who wields it, who benefits, and whose voices are silenced. The following four lessons emerged as crucial for effective environmental reporting:

1. Follow the Law as Closely as the Landscape

Beyond protests and construction, journalists must understand the legal mechanisms communities use to challenge projects. Tracking constitutional litigation and legislative changes is as vital as observing physical development, as shifts in law often subtly alter the power balance. A field guide provided in the full project offers further guidance.

2. Environmental Reporting Should Be Evidence-Led Rather Than Statement-Led

Official announcements are just one piece of the puzzle. Experts emphasize scrutinizing Environmental Impact Statements, expert witness reports, hydrological studies, procurement records, public budgets, court filings, and freedom of information requests. Comparing these documents allows journalists to verify official claims rather than merely repeating them.

3. Reporters Should Broaden Who Counts as an Expert

While scientists, constitutional lawyers, and hydrologists remain essential, the expertise of communities living with daily environmental change is equally invaluable. Community leaders often document water quality, map damage, record oral histories, and preserve Indigenous knowledge – all of which frequently become crucial evidence in court.

4. Journalists Should Pay Closer Attention to Institutions Rather Than Only Outcomes

A court ruling or an environmental permit is rarely the end of the story. Journalists must investigate whether rulings were implemented, if consultations were genuine, and if environmental conditions were monitored post-approval. Accountability reporting requires tracing the actions and failures of public bodies responsible for enforcement long after the initial headlines fade.