US environmental regulators propose to remove the legal basis for vehicle emissions rules

The US environmental regulators are proposing to cancel the 2009 finding that greenhouse gases endanger public health. They also want to repeal all emission standards for cars, trucks, and heavy-duty vehicles. This means vehicle manufacturers would no longer have federal limits on the greenhouse gases their products can emit.

The 2009 endangerment finding gave the US environmental regulators the power to set limits on greenhouse gas emissions. Removing this finding would eliminate the legal foundation for federal climate regulations on vehicles. This would make it harder for the US to meet its climate targets and could lead to more greenhouse gases from the transportation sector.