"A dozen states led by California and New York sued the Trump administration over its plan to roll back auto-industry regulations put in place by former President Barack Obama to improve fuel-efficiency.
A final rule issued by the National Highway Traffic Safety Administration violates federal law because it doesn’t properly penalize automakers when they fail to meet U.S. fuel-efficiency standards, the states said in a lawsuit filed Friday in federal appeals court in Manhattan.
It’s the latest clash between Democratic-led states and President Donald Trump, who regularly mocks the science behind climate change and has rolled back numerous environmental regulations. California alone has filed more than two dozen environmental suits against the administration."