Casten Blasts Trump’s Stoppage of the National Climate Assessment
Washington, D.C. — U.S. Congressman Sean Casten (IL-06) released the following statement regarding reports that the Trump Administration has effectively halted the National Climate Assessment (NCA), a congressionally mandated report on the impacts of climate change on the United States:
“The president can attempt to change the laws of the United States, but he cannot change the laws of physics. Climate change is real. It is impacting our health, economy, and national security. It is fueling extreme wildfires, droughts, hurricanes, and flooding, bringing home insurance markets around the country to the brink of collapse. Pretending otherwise isn’t just foolish, it’s dangerous and puts American lives at risk.
“To effectively stop the work of the National Climate Assessment is to strip federal, state, and local governments of the insights necessary to implement targeted solutions that mitigate the climate crisis. The NCA provides an essential, comprehensive look at how climate change affects American communities, economies, and ecosystems. Gutting the NCA also harms US national security, limiting information available to the Department of Defense as to how climate change impacts military readiness, infrastructure, supply chain, and global stability.
“Cutting the nation's premier tool for understanding the current and future impacts of a changing climate is like smashing the radar on a ship navigating into a growing storm—reckless, disorienting, and leaving everyone on board to navigate blind. This is among the most damaging actions the Trump Administration has taken against climate science to date.”
The NCA is a congressionally mandated report under the Global Change Research Act, issued every four years. It’s coordinated by NASA and draws on contributions from 14 federal agencies and hundreds of academic, economic, and scientific experts. It provides:
- High-resolution, county-level climate projections
- Physical climate risk data essential to real estate, financial, and infrastructure planning
- Sector-specific and economic impact assessments across a wide range of modeled futures
Unlike the IPCC reports, which consider the global impacts of climate change, the NCA offers the most granular and policy-relevant science specific to the U.S.. Without it, policymakers lose a foundational tool for climate adaptation, planning, and economic risk assessment.
On April 9th, 2025, the administration defunded the NCA and gutted the NASA team supporting it. This week, reports indicate the Trump Administration has dismissed all remaining non-governmental volunteers, putting the 2028 report in jeopardy.
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