Three former Environmental Protection Agency leaders say rollbacks proposed by the Trump administration endanger the lives of millions of Americans and abandon the agency’s mission to protect the environment and human health.

The EPA administrator says he is rolling back dozens of environmental rules, including those crucial to California programs on climate change and electric vehicles, and closing offices that worked to lower pollution in poor communities.

This week the EPA announced the rollback of a wide swath of regulations, many of which could worsen air quality. Experts say that could have implications for health.