Legal experts say it's a marked departure from the agency’s historic purpose to protect human health and the environment. “It's an all out assault on climate regulation and environmental and public health protections,” says Michael Burger, director of the Sabin Center for Climate Change Law at Columbia University.

ABC News’ Stephanie Ramos talks to former EPA Administrator Gina McCarthy on the Trump administration’s rollback of clean air and water protections.

The Trump administration announced a blitz of pollution and climate regulation rollbacks at the U.S. Environmental Protection Agency that target, among other things, the agency’s landmark finding that greenhouse gas emissions harm public health.

The agency's plan to repeal or weaken more than two dozen environmental regulations could deliver a direct blow to causes close to the heart of Californians — including air and water quality standards,

The Environmental Protection Agency (EPA) has announced a sweeping rollback of key environmental regulations, a move that has sparked strong opposition from environmental advocates and public health officials.

The Environmental Protection Agency announced this week that it’s starting the process of undoing 31 environmental regulations, including a ruling that’s foundational to US climate policy. But undoing any regulation is a cumbersome process,