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
White House Buries CDC Report on COVID-19
The White House blocked the release of a CDC report that provided recommendations on how to reopen up communities safely during the COVID-19 pandemic.
Trump Administration Axes Coronavirus Research
The Trump administration defunded a National Institutes of Health grant supporting research on bat-human virus transmission during the COVID-19 pandemic.
EPA Conceals Scientific Information on Hundreds of New, Potentially Dangerous Chemicals
The EPA is consistently violating congressional law in how it reviews the health and safety implications for newly manufactured chemicals.
EPA Skirts Public Comment Process on Cancer-Causing Pesticide
The EPA sidestepped the normal public comment process, when it approved the use of a cancer-causing pesticide for soybean plants in 25 states.
Endangered Species Threatened in California due to Sidelining of Scientific Report
FWS dismissed and rewrote a ‘biological opinion’ that determined endangered species would be threatened by changes in water management practices in California.
OSHA is Failing to Record COVID-19 Cases For All Workers
OSHA issued guidance that, companies will generally no longer be required to report COVID-19 cases among their workers.
Decisionmaking Process at EPA’s Scientific Advisory Board has Become More Secretive
Most members of the EPA's scientific advisory board are now restricted from a certain decisionmaking process.
Polar Bear Study Opened Up for Public Comment Period to Undermine its Findings
The Trump administration opened an unprecedented public comment period to solicit public feedback on a peer-reviewed scientific study.
White House Directs EPA Scientists to Downplay a Chemical’s Link to Heart Defects
White House political officials downplayed the danger of the chemical TCE.
DOI Official Modified Scientific Reports to Increase Doubt on Climate Change Science
An official at the DOI inserted inaccurate language on climate change into at least nine scientific reports.
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.