EPA Mission Tracker Archive

EPA administrators under former President Trump removed, weakened, and delayed many rules that protect public health and the environment. As a result, the agency was on a “reverse mission.” Instead of working to deliver environmental and public health protections, the Trump EPA allowed higher levels of pollution for longer periods of time. EPA leadership also undertook a larger project that will be more difficult to reverse: dismantling the agency’s ability to do its job.

The Trump EPA undermined the agency’s capacity to develop, implement, and enforce effective programs that reduce pollution and serve vital public needs. These efforts left behind a regime that delivers fewer reductions in harmful pollutants and an agency that lacks the institutional tools to protect public health and the environment.

See below for our posts describing changes to critical processes that enable the agency to carry out its mission at the intersection between public health, science, and the environment. For more information on EPA’s rulemaking process, visit our overview page here.


The Trump EPA undermined the agency’s standing as an expert agency and its ability to take science-based actions. Under former President Trump, EPA leadership  also replaced qualified experts on its advisory committees, proposed excluding important science from its decision-making, changed its regulatory benefit calculations, and limited the scientific information it shares with the public.

Public Health

Under former President Trump, EPA failed to protect human health to the best of its ability. Agency leadership undermined the review process for air pollution standards that are essential to public health- the National Ambient Air Quality Standards (NAAQS).


Under former President Trump, EPA made it more difficult for the public to hold the agency accountable for protecting public health and the environment.

Enforcement & Compliance

Under former President Trump, EPA changed its compliance and enforcement policies and how it collected monitoring information. These actions decreased the overall effectiveness of EPA’s programs and regulations during the Trump administration.


Environmental Justice

EPA’s EJ efforts to-date have been insufficient to address the scale and severity of environmental injustice in the US. These challenges worsened during the Trump administration.