New Mexico climate groups struck a defiant tone in the wake of the U.S. Environmental Protection Agency’s plan to dismantle federal authority to reduce one of the drivers of climate change: greenhouse gases.

EPA chief Lee Zeldin proposes a repeal of the Endangerment Finding on climate change. State Sen. Ed Markey is fighting back.

The endangerment finding underpins the EPA’s ability to regulate greenhouse gases. The Trump administration is trying to reverse it.