Attacks on Science

Published Jan 20, 2017 Updated Jun 23, 2026

This page represents our work covering attacks on science under previous administrations. Our new tracker, covering attacks on science under the second Trump administration, can be found here. The methodology and other resources for this new tracking system can be found here.

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 have provided regular summaries of documented attacks.

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

The top of a barbed wire fence.

CDC Scientists Sidelined in Decision to Seal US Border

The White House ordered the CDC to use their emergency powers to effectively seal the US borders in March, overruling the agency’s scientists who said there was no evidence the action would slow the spread of the novel coronavirus.

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