Trump's Proposed Car Emissions Rollback Would Prevent States from Protecting Citizens

The Trump administration has proposed freezing fuel economy and greenhouse-gas standards after 2020 and stripping states of their authority to set tougher rules. Transportation is now the largest source of carbon pollution, and weakening national standards would increase emissions, worsen air quality and undermine progress on climate change and public health. States must retain the ability to protect their citizens, and advocates should urge the EPA to maintain strong car emissions rules.