Science is at the core of a healthy democracy. But for years, presidential administrations have, in differing ways, sidelined scientific evidence and attacked scientific integrity.
Due to the large number of attacks on science we’re seeing from the second Trump administration, we are currently providing regular summaries of documented attacks.
- A Backward March: Another Month of Attacks on Federal Science (April 2, 2025)
- A Hundred Attacks and Counting: What Happened to Federal Science in February (March 12, 2025)
- How Science Has Fared in the First Two Weeks of the New Trump Administration (January 30, 2025)
Below is the list of documented attacks on science that occurred under the four previous administrations. They include disappearing data, silenced scientists, suppressed studies, and other assaults on science-based policy. More information on these attacks can be found in our peer-reviewed study and in our data repository.
Attacks on science
OSHA is Allowing Companies to Not Report COVID-19 Hospitalizations Among Workers
OSHA changed its COVID-19 reporting requirements such that severe COVID-19 cases at workplaces are less likely to get reported.
Director of US Geological Survey Undermines How Scientists Study Climate Change
The USGS' operational manual was edited to push climate models that are less likely to show the worst effects of climate change.
Trump Administration Delayed a Key Step in Major Climate Report
The Fifth National Climate Assessment, had a key step delayed for several months.
Food and Drug Administration Skirts Scientific Process to Keep Food Safe
The FDA failed to enforce a policy that protects food from potentially unsafe chemicals.
Homeland Security Officials Modified Intelligence Reports to Downplay Politically-Inconvenient Threats
DHS officials delayed or modified several intelligence reports on the threat of Russian political interference in the US.
CDC Defunded by $300 Million for a Politically-Motivated Ad Campaign
CDC officials were sidelined in a decision to remove $300 million from the agency’s budget.
White House Installs Political Operatives at the CDC
The White House installed two political operatives at the CDC to control what information the CDC releases on COVID-19.
CDC Order to Dock Cruise Ships was Substantially Weakened
The White House blocked a science-based order from the CDC extending a no-sail order for cruise ships until mid-February.
White House Blocks CDC From Requiring Masks on Public Transit
The CDC drafted an order requiring all passengers and employees to wear masks on public transportation, but the White House chose to block the order.
The EPA suspended anti-pollution laws during the pandemic
The EPA temporarily suspended its enforcement activities, allowing industrial facilities to decide whether they would comply with environmental laws.
Related resources
Report
Advancing the Scientific Integrity Act
Scientific Integrity Act Policy Brief
Activist Resource
Scientific Societies Call on Congress to Save Science
This open letter, signed by more than 40 prominent scientific societies and organizations, was delivered to Congress in March 2025.
Activist Resource
Cumulative Impacts: Recommendations for EPA
To improve environmental health, UCS prepared eight fact sheets summarizing the recommendations of the NEJAC Cumulative Impacts Workgroup to the EPA.
Activist Resource
Resources for Federal Scientists
Are you a federal scientist, contractor, or federal worker? Here are resources to have on hand during the Trump administration.