Trump’s day-one actions on energy come as climate change-fueled fires ravage Southern California, following the globe’s hottest year on record.

The Republican leader also declared a "national energy emergency" to expand drilling in the world's top oil and gas producer, said he would scrap vehicle emissions standards that amount to an "electric vehicle mandate,

Valerie Volcovici covers U.S. climate and energy policy from Washington, DC. She is focused on climate and environmental regulations at federal agencies and in Congress and how th