President Donald Trump’s administration has proposed revoking a scientific finding that's long been the central basis for U.S. action to regulate greenhouse gas emissions and fight climate change.

EPA Administrator Lee Zeldin on Sunday defended the Trump administration’s move to repeal the so-called endangerment finding and cast doubt that greenhouse gas emissions endangers human health.

In 2009, the Environmental Protection Agency declared that the rising concentrations of greenhouse gases in the atmosphere threatened public health and welfare. This “endangerment finding,” as it’s known in legal jargon,