“WASHINGTON — Gina McCarthy worked six or seven days a week, 12 to 14 hours a day, to produce America’s first real effort to combat climate change, a suite of Obama-era regulations that would cut pollution from the nation’s tailpipes and smokestacks and wean the world’s largest economy from fossil fuels.
Then the administration of Donald J. Trump shredded the work of President Barack Obama’s Environmental Protection Agency chief before any of it could take effect.
She is the most powerful climate change official in the country other than Mr. Biden himself, and her charge is not simply to reconstruct her Obama-era policies but to lead an entire government to tackle global warming, from the nation’s military to its diplomatic corps to its Treasury and Transportation Department. She will also lead negotiations with Congress for permanent new climate change laws that could withstand the next change of administration. . . . “