EPA chief Zeldin announced plans to rescind the country's biggest tool to fight climate change. Environmental advocates call it a direct assault.

On Tuesday the U.S. Environmental Protection Agency released its proposal to undo its long-standing rationale and legal mandate to regulate greenhouse gases under the decades-old Clean Air Act—part of the Trump administration’s wide-ranging campaign to dismantle federal efforts to combat climate change.

The Trump administration is releasing its proposal to undo the “endangerment finding,” the long-standing rationale and legal imperative for regulating greenhouse gases under the Clean Air Act